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1. General Motors (Revenue: $9.82 billion)

2. Jersey Standard (Revenue: $5.66 billion)

3. U.S. Steel (Revenue: $3.25 billion)

4. General Electric (Revenue: $2.96 billion)

5. Esmark (Revenue: $2.51 billion)

The inaugural Fortune 500 in 1955 was lead by major firms representing all areas of industry: General Motors, Jersey Standard (a predecessor to Exxon), U.S. Steel, General Electric, and consumer conglomerate Esmark.

General Motors put out the , the first successful Chevy with an optional motoramic V8 engine.  This model was hugely successful for Chevrolet, and was heralded as the

1. General Motors (Revenue: $12.44 billion)

2. Jersey Standard (Revenue: $6.27 billion)

3. Ford Motor (Revenue: $5.59 billion)

4. U.S. Steel (Revenue: $4.10 billion)

5. Chrysler (Revenue: $3.47 billion)

Chrysler, which made the top five seven times from 1956-2005, introduced its in 1956.  Such tailfins, common on many car models in the late 40’s and 50’s, were meant to stabilize cars by placing the center of pressure further to the rear, but many consumers were just as likely to buy them because they looked really flashy.

1. General Motors (Revenue: $10.80 billion)

2. Jersey Standard (Revenue: $7.13 billion)

3. Ford Motor (Revenue: $4.65 billion)

4. U.S. Steel (Revenue: $4.23 billion)

5. General Electric (Revenue: $4.09 billion)

1957 was the year of General Motors’ ‘57 Chevy Bel Air, widely known as an auto icon. This model built on the ‘55 Chevy with a new dashboard, the relocation of air ducts to the headlight pods, a lower stance, and the famous ‘57 tailfins.

1. General Motors (Revenue: $10.99 billion)

2. Jersey Standard (Revenue: $7.83 billion)

3. Ford Motor (Revenue: $5.77 billion)

4. U.S. Steel (Revenue: $4.41 billion)

5. General Electric (Revenue: $4.34 billion)

In 1958, Exxon Corporation fueled a landmark in American air travel: Pan American Airlines successfully navigated its , with an airplane powered by Mobil aviation fuel.

1. General Motors (Revenue: $9.52 billion)

2. Jersey Standard (Revenue: $7.54 billion)

3. Ford Motor (Revenue: $4.13 billion)

4. General Electric (Revenue: $4.12 billion)

5. U.S. Steel (Revenue: $3.47 billion)

General Electric, a solid runner-up for biggest company in this year's #4 spot, released its in 1959. It looked slick, with gold finishings on the grill and dial, but could be bought at the (then pretty low) price of $20.

1. General Motors (Revenue: $11.23 billion)

2. Jersey Standard (Revenue: $7.91 billion)

3. Ford Motor (Revenue: $5.36 billion)

4. General Electric (Revenue: $4.35 billion)

5. U.S. Steel (Revenue: $3.64 billion)

1960 saw a ushered in with a famous commercial that combined American exceptionalism with the fantasy of cars falling from space.

1. General Motors (Revenue: $12.74 billion)

2. Jersey Standard (Revenue: $8.03 billion)

3. Ford Motor (Revenue: $5.24 billion)

4. General Electric (Revenue: $4.20 billion)

5. U.S. Steel (Revenue: $3.70 billion)

In 1961, General Motors produced a car inspired by a shark.  William L. Mitchell, VP of the GM Styling Staff, turned a Mako shark he caught off the coast of Florida into the , featuring a supercharged engine and iridescent blue paint scheme.

1. General Motors (Revenue: $11.40 billion)

2. Jersey Standard (Revenue: $8.44 billion)

3. Ford Motor (Revenue: $6.71 billion)

4. General Electric (Revenue: $4.46 billion)

5. Mobil (Revenue: $3.32 billion)

1962 marked the end of the tenth and final season of , an American anthology series with different stars each week.  This show was sponsored by General Electric's Department of Public Relations, and hosted by none other than Ronald Reagan.

1. General Motors (Revenue: $14.64 billion)

2. Jersey Standard (Revenue: $9.54 billion)

3. Ford Motor (Revenue: $8.09 billion)

4. General Electric (Revenue: $4.79 billion)

5. Mobil (Revenue: $3.93 billion)

In 1963, Humble (recently acquired by Jersey Standard's parent company) invented that revolutionized the way Exxon searched for oil and gas resources around the world. This technology would come to the forefront of oil exploration when paired with computer imaging advances in the 1980s.

1. General Motors (Revenue: $16.49 billion)

2. Jersey Standard (Revenue: $10.26 billion)

3. Ford Motor (Revenue: $8.74 billion)

4. General Electric (Revenue: $4.92 billion)

5. Mobil (Revenue: $4.35 billion)

1964 was the year of the - one of the fastest-selling cars in history, and a cultural icon to this day. This model was the first of the "pony cars:" inexpensive, sporty two-seaters with long hoods.

1. General Motors (Revenue: $17.00 billion)

2. Jersey Standard (Revenue: $10.81 billion)

3. Ford Motor (Revenue: $9.67 billion)

4. General Electric (Revenue: $4.94 billion)

5. Mobil (Revenue: $4.50 billion)

New York City hosted the from April 1964 to April 1965.  This fair was a showcase of American consumerism and space age technology, remembered fondly by baby boomers as a hallmark of peace and prosperity before the Vietnam War.  General Motors, Ford, General Electric, and Mobil all had exhibits at the fair; Ford unveiled the Mustang, while GE showcased its scientists and engineers with photos projected in a .  But the most popular exhibit was GM’s: visitors rode the Futurama, a featuring scenes of exotic locations to which travel would soon theoretically be possible.

1. General Motors (Revenue: $20.73 billion)

2. Ford Motor (Revenue: $11.54 billion)

3. Jersey Standard (Revenue: $11.47 billion)

4. General Electric (Revenue: $6.21 billion)

5. Chrysler (Revenue: $5.30 billion)

1966 was another successful financial year for General Motors, but the company faced some legal trouble in the form of a Supreme Court case; a local court found evidence that General Motors was promoting its interests through a conspiracy of the Losor Chevrolet Dealers Association in the summer of 1960, violating the Sherman Act.  The case was  (against General Motors) on April 28, 1966.

1. General Motors (Revenue: $20.21 billion)

2. Ford Motor (Revenue: $12.24 billion)

3. Jersey Standard (Revenue: $12.19 billion)

4. General Electric (Revenue: $7.18 billion)

5. Chrysler (Revenue: $5.65 billion)

Chrysler had a drop in sales in 1967, but still kept its revenue high enough to maintain its #5 spot on the Fortune 500 list. Its flagship model during this year was the New Yorker, a model Chrysler produced from 1940 until 1996 - the .

1. General Motors (Revenue: $20.03 billion)

2. Jersey Standard (Revenue: $13.27 billion)

3. Ford Motor (Revenue: $10.52 billion)

4. General Electric (Revenue: $7.74 billion)

5. Chrysler (Revenue: $6.21 billion)

General Motors opened its new New York City in 1968. This building, located on 5th Avenue facing Central Park, is now one of Manhattan’s most recognizable skyscrapers.

1. General Motors (Revenue: $22.76 billion)

2. Jersey Standard (Revenue: $14.09 billion)

3. Ford Motor (Revenue: $14.08 billion)

4. General Electric (Revenue: $8.38 billion)

5. Chrysler (Revenue: $7.45 billion)

In 1969, Apollo 11 took to the moon, and General Motors took to the streets, with a new class of "experimental urban cars" designed to increase fuel efficiency.  These three models were small and supposedly aerodynamic - take a look at and decide for yourself if you'd ever want to buy one.

1. General Motors (Revenue: $24.30 billion)

2. Jersey Standard (Revenue: $14.93 billion)

3. Ford Motor (Revenue: $14.76 billion)

4. General Electric (Revenue: $8.45 billion)

5. Intl. Business Machines (Revenue: $7.20 billion)

The was put in place in 1970 in Victoria, Australia; this law mandated that seatbelts were compulsory for all drivers and front-seat passengers. Meanwhile, in the American auto industry, Ford introduced lap- and shoulder-belts, similar to those in our cars today.

1. General Motors (Revenue: $18.75 billion)

2. Jersey Standard (Revenue: $16.55 billion)

3. Ford Motor (Revenue: $14.98 billion)

4. General Electric (Revenue: $8.73 billion)

5. Intl. Business Machines (Revenue: $7.50 billion)

In 1971, IBM’s CEO, ., retired as a result of a heart attack. The company was then run by someone outside of the Watson family for the first time since 1916, but it still had some success with powerful products such as the IBM System/370 Model 195 computer and computers that helped run Mariner 9, the first spaceship to orbit Mars.

1. General Motors (Revenue: $28.26 billion)

2. Exxon Corporation (Revenue: $18.70 billion)

3. Ford Motor (Revenue: $16.43 billion)

4. General Electric (Revenue: $9.43 billion)

5. Intl. Business Machines (Revenue: $8.27 billion)

Jersey Standard, a descendant of the venerable Standard Oil Company founded in 1870 by John D. Rockefeller Sr.,  in 1972.

1. General Motors (Revenue: $30.44 billion)

2. Exxon Corporation (Revenue: $20.31 billion)

3. Ford Motor (Revenue: $20.19 billion)

4. General Electric (Revenue: $10.24 billion)

5. Chrysler (Revenue: $9.76 billion)

General Motors introduced the company’s first car seats in 1973. These seats were first marketed as “: seats for those you want to protect.”

1. General Motors (Revenue: $35.80 billion)

2. Exxon Corporation (Revenue: $25.72 billion)

3. Ford Motor (Revenue: $23.02 billion)

4. Chrysler (Revenue: $11.77 billion)

5. General Electric (Revenue: $11.58 billion)

1974 was Chrysler's first year above #5 on the Fortune 500 list… but it was also their last year on the list. After 1974, even though their sales remained high, the company just wasn't quite successful enough to reach those top rankings. Maybe featuring dramatic shots of a bald eagle and a voiceover by Richard Basehart was just too much for the American public to handle.

1. Exxon Corporation (Revenue: $42.06 billion)

2. General Motors (Revenue: $31.55 billion)

3. Ford Motor (Revenue: $23.62 billion)

4. Texaco (Revenue: $23.26 billion)

5. Mobil (Revenue: $18.93 billion)

In 1975, Exxon took the top spot - beating out General Motors for the first time with a staggering $15 billion increase in revenue from the previous year. This was also the year that , now President Trump’s Secretary of State, joined the company as a production engineer.

1. Exxon Corporation (Revenue: $44.86 billion)

2. General Motors (Revenue: $35.72 billion)

3. Texaco (Revenue: $24.51 billion)

4. Ford Motor (Revenue: $24.01 billion)

5. Mobil (Revenue: $20.62 billion)

Texaco’s earnings were hurt by decreased production of crude oil and increased US income taxes, but the company still managed to and hit #3 on the Forbes 500 list - the highest spot it has managed in 50 years. Maybe their success is because Texaco was

1. Exxon Corporation (Revenue: $48.63 billion)

2. General Motors (Revenue: $47.18 billion)

3. Ford Motor (Revenue: $28.84 billion)

4. Texaco (Revenue: $26.45 billion)

5. Mobil (Revenue: $26.06 billion)

General Motors made a risky decision in 1977 as the company , from its luxury Cadillacs to its more affordable Chevrolets. The move paid off, though: Cadillac DeVille series, in particular, sold over 200,000 models, more than all of Ford’s luxury Lincoln series combined.

1. General Motors (Revenue: $54.96 billion)

2. Exxon Corporation (Revenue: $54.13 billion)

3. Ford Motor (Revenue: $37.84 billion)

4. Mobil (Revenue: $32.13 billion)

5. Texaco (Revenue: $27.92 billion)

In 1978, General Motors was back on top and continuing its , with new models including a silver 25th anniversary Corvette and a downsized Chevrolet Malibu.

1. General Motors (Revenue: $63.22 billion)

2. Exxon Corporation (Revenue: $60.33 billion)

3. Ford Motor (Revenue: $42.78 billion)

4. Mobil (Revenue: $34.74 billion)

5. Texaco (Revenue: $28.61 billion)

A about the potential impact of fossil fuel combustion on CO2 concentration in the atmosphere, recently exposed by a group of investigative journalists from Columbia Journalism School, demonstrates that on global climate change. The company has since been accused of hiding these implications from the public in order to continue turning a profit.

1. Exxon Corporation (Revenue: $79.11 billion)

2. General Motors (Revenue: $66.31 billion)

3. Mobil (Revenue: $44.72 billion)

4. Ford Motor (Revenue: $43.51 billion)

5. Texaco (Revenue: $38.35 billion)

General Motors was back in the #2 spot in 1980, and facing some challenges. The , a new class of models intended to bring four-wheel drive models into the mainstream auto industry, faced so many customer complaints that they saw more recalls than any other group of GM models.

1. Exxon Corporation (Revenue: $103.14 billion)

2. Mobil (Revenue: $59.51 billion)

3. General Motors (Revenue: $57.73 billion)

4. Texaco (Revenue: $51.20 billion)

5. Chevron (Revenue: $40.48 billion)

In 1981, General Motors was the only non-oil company in the top five. This was a big year for oil companies not leading the Fortune 500 list, as well: Du Pont (#15) (#14) for $7.3 billion, in what was at that time a record-breaking merger.

1. Exxon Corporation (Revenue: $108.11 billion)

2. Mobil (Revenue: $64.49 billion)

3. General Motors (Revenue: $62.70 billion)

4. Texaco (Revenue: $57.63 billion)

5. Chevron (Revenue: $44.22 billion)

In 1982, Exxon Corporation , Exxon Insurance Consultants International Ltd., for use of the name Exxon (which was copyrighted by the fuel company in question.) The appellate court ruled in favor of the law firm, because the name “Exxon” held no weight as a literary work unless associated with the trademark of the corporation.

1. Exxon Corporation (Revenue: $97.17 billion)

2. General Motors (Revenue: $60.03 billion)

3. Mobil (Revenue: $59.95 billion)

4. Texaco (Revenue: $46.99 billion)

5. Ford Motor (Revenue: $37.07 billion)

On January 7, 1983, human error at a Texaco gas terminal in Newark, New Jersey that killed one man and injured 22 others. The blast was felt as far away as Stanford, Connecticut, and the resulting fire burned for three days.

1. Exxon Corporation (Revenue: $88.56 billion)

2. General Motors (Revenue: $74.58 billion)

3. Mobil (Revenue: $54.61 billion)

4. Ford Motor (Revenue: $44.45 billion)

5. Intl. Business Machines (Revenue: $40.18 billion)

IBM climbed back into the top 5 in 1984 despite the , which premiered its first Mac computer that year. A aired during the 1984 Superbowl to advertise the Mac not-so-secretly referred to IBM as "Big Brother."

1. Exxon Corporation (Revenue: $90.85 billion)

2. General Motors (Revenue: $83.89 billion)

3. Mobil (Revenue: $56.05 billion)

4. Ford Motor (Revenue: $52.37 billion)

5. Texaco (Revenue: $47.33 billion)

In the fall of 1985, Ford introduced the Taurus, a car that and scored high mileage per gallon. The Taurus sold in just its first year on the market, and about 410,000 models within six years, making it one of the most popular cars in American history.

1. General Motors (Revenue: $96.37 billion)

2. Exxon Corporation (Revenue: $86.67 billion)

3. Mobil (Revenue: $55.96 billion)

4. Ford Motor (Revenue: $52.77 billion)

5. Intl. Business Machines (Revenue: $50.06 billion)

General Motors was back on top again in 1986, but the company also “acknowledged... that it would probably never regain the huge share of the market that it enjoyed more than a decade ago,” as wrote that December. This statement accompanied reports of G.M.’s intent to close 21 of its 125 plants and eliminate nearly 18% of employees in the next few years.

1. General Motors (Revenue: $102.81 billion)

2. Exxon Corporation (Revenue: $69.89 billion)

3. Ford Motor (Revenue: $62.72 billion)

4. Intl. Business Machines (Revenue: $51.25 billion)

5. Mobil (Revenue: $44.87 billion)

In 1986, �����Dz�’s Research and Engineering division had an : 3D microtomography, an imaging technique that allows scanners to examine the structure of an opaque object (such as an underwater oil reserve) without damaging it.

1. General Motors (Revenue: $101.78 billion)

2. Exxon Corporation (Revenue: $76.42 billion)

3. Ford Motor (Revenue: $71.64 billion)

4. Intl. Business Machines (Revenue: $54.22 billion)

5. Mobil (Revenue: $51.22 billion)

In 1988, IBM researchers created the in computing history; they were able to process a single bit of information in 20 billionths of a second. These chips were experimental, though, and were never released on the market.

1. General Motors (Revenue: $121.09 billion)

2. Ford Motor (Revenue: $92.45 billion)

3. Exxon Corporation (Revenue: $79.56 billion)

4. Intl. Business Machines (Revenue: $59.68 billion)

5. General Electric (Revenue: $49.41 billion)

On March 24, 1989, an Exxon oil tanker hit a reef in Prince William Sound (off the coast of Alaska), causing the into the environment. Exxon paid billions in fines and cleanup costs, but many Alaska beaches are still polluted by the spill.

1. General Motors (Revenue: $126.97 billion)

2. Ford Motor (Revenue: $96.93 billion)

3. Exxon Corporation (Revenue: $86.66 billion)

4. Intl. Business Machines (Revenue: $63.44 billion)

5. General Electric (Revenue: $55.26 billion)

General Motors developed the , one of the first electric cars designed as electric from the outset, in 1990. The 1996 EV1, GM’s first electric model to go into production, was based off of this prototype.

1. General Motors (Revenue: $125.13 billion)

2. Exxon Corporation (Revenue: $105.89 billion)

3. Ford Motor (Revenue: $98.27 billion)

4. Intl. Business Machines (Revenue: $69.02 billion)

5. Mobil (Revenue: $58.77 billion)

1991 marked the release of IBM’s third generation of personal computers: the . This system was far less compact than the laptops of today, but it did have a (comparatively) fast and new graphics systems.

1. General Motors (Revenue: $123.78 billion)

2. Exxon Corporation (Revenue: $103.24 billion)

3. Ford Motor (Revenue: $88.96 billion)

4. Intl. Business Machines (Revenue: $65.39 billion)

5. General Electric (Revenue: $60.24 billion)

General Motors kept its top spot in 1992 despite recording a record loss for a U.S. company of $23.5 billion over the course of the year. GM hoped to move back in an upward direction through , closing 23 plants and eliminating 74,000 jobs.

1. General Motors (Revenue: $132.77 billion)

2. Exxon Corporation (Revenue: $103.55 billion)

3. Ford Motor (Revenue: $100.79 billion)

4. Intl. Business Machines (Revenue: $65.10 billion)

5. General Electric (Revenue: $62.20 billion)

In similar fashion to GM the previous year, IBM lost around between 1992 and 1993. The company worked to offset the costs by of their 300,000 workers, restructuring the board of directors, and pushing to keep up with the fast-paced technology market that focused more on personal desktops and less on bulky, outdated mainframes.

1. General Motors (Revenue: $133.62 billion)

2. Ford Motor (Revenue: $108.52 billion)

3. Exxon Corporation (Revenue: $97.83 billion)

4. Intl. Business Machines (Revenue: $62.72 billion)

5. General Electric (Revenue: $60.82 billion)

Exxon was involved with several court proceedings in 1993 relating to the disastrous 1989 oil spill, including one where the for not wanting to help Exxon cover the damages owed to the victims affected by the spill, and another one where it was ruled that as compensation to the Alaskan fishermen who lost their source of income due to the spill.

1. General Motors (Revenue: $154.95 billion)

2. Ford Motor (Revenue: $128.44 billion)

3. Exxon Corporation (Revenue: $101.46 billion)

4. Wal-Mart Stores (Revenue: $83.41 billion)

5. AT&T (Revenue: $75.09 billion)

A union-led strike in September 1994 caused to walk out of their jobs at the Flint, Michigan plant in protest of grueling overtime hours causing health issues. As GM worked to meet its high demand for cars, workers complained that the company should hire more full-time workers to ease the strain on the existing union workers, but GM could not agree on the number of workers that should be hired.

1. General Motors (Revenue: $168.83 billion)

2. Ford Motor (Revenue: $137.14 billion)

3. Exxon Corporation (Revenue: $110.01 billion)

4. Wal-Mart Stores (Revenue: $93.63 billion)

5. AT&T (Revenue: $79.61 billion)

In the fall of 1995, Walmart pulled a shirt from its stock that said “Someday a woman will be president,” after some people . The company’s response to the shirt was that it “goes against Wal-Mart’s family values." The article resurfaced 20 years later when Hillary Clinton became the first woman to be the Democratic nominee for president, as a way to show how far the country has grown.

1. General Motors (Revenue: $168.37 billion)

2. Ford Motor (Revenue: $146.99 billion)

3. Exxon Corporation (Revenue: $119.43 billion)

4. Wal-Mart Stores (Revenue: $106.15 billion)

5. General Electric (Revenue: $79.18 billion)

In 1997, Wal-Mart sat at number four on the list, having officially celebrated it's first .

1. General Motors (Revenue: $178.17 billion)

2. Ford Motor (Revenue: $153.63 billion)

3. Exxon Corporation (Revenue: $122.38 billion)

4. Wal-Mart Stores (Revenue: $119.30 billion)

5. General Electric (Revenue: $90.84 billion)

On June 5, 1998, General Motors saw the beginning of another large strike, as 3,400 members of the United Auto Workers union walked out of their jobs at a metal-stamping factory in Flint, Michigan. Flint was home to over 30,000 GM workers at 18 different factories - more than at any other singular place in the country.  The strike lasted seven weeks and halted production at factories around the US.

1. General Motors (Revenue: $161.32 billion)

2. Ford Motor (Revenue: $144.42 billion)

3. Wal-Mart Stores (Revenue: $139.21 billion)

4. Exxon Corporation (Revenue: $100.70 billion)

5. General Electric (Revenue: $100.47 billion)

November 30, 1999 was a landmark day for the oil industry: Exxon (#4) and Mobil (#8) joined forces to become Exxon Mobil. This merger made , and brought back together two pieces of Rockefeller's Standard Oil that had been split apart in 1911.

1. General Motors (Revenue: $189.06 billion)

2. Wal-Mart Stores (Revenue: $166.81 billion)

3. Exxon Mobil (Revenue: $163.88 billion)

4. Ford Motor (Revenue: $162.56 billion)

5. General Electric (Revenue: $111.63 billion)

General Motors and ALSTOM, a worldwide train company, worked together in 2000 to create a new, leading locomotive maintenance provider called . As one of the world’s largest locomotive manufacturer and the global specialist in energy and transportation infrastructure, respectively, the two companies were well suited for this dual venture.

1. Exxon Corporation (Revenue: $210.39 billion)

2. Wal-Mart Stores (Revenue: $193.30 billion)

3. General Motors (Revenue: $184.63 billion)

4. Ford Motor (Revenue: $180.60 billion)

5. General Electric (Revenue: $129.85 billion)

Vice chair of Exxon stepped down

�����Dz�’s took place in July 2001, the first split after the Exxon-Mobil merger. In this split, each holder of one of Exxon Mobil’s 3.4 billion shares received one additional share for each share held.

1. Wal-Mart Stores (Revenue: $219.81 billion)

2. Exxon Corporation (Revenue: $191.58 billion)

3. General Motors (Revenue: $177.26 billion)

4. Ford Motor (Revenue: $162.41 billion)

5. Enron (Revenue: $138.72 billion)

As Wal-Mart took the Fortune 500 top spot in 2002, activists were not buying into the blue and yellow hipe. An Indyweek article slammed this corporation for its , and other hard calls made in order to profit Wal-Mart’s owners, and called for readers to boycott Wal-Mart.

1. Wal-Mart Stores (Revenue: $246.53 billion)

2. General Motors (Revenue: $186.76 billion)

3. Exxon Corporation (Revenue: $182.47 billion)

4. Ford Motor (Revenue: $163.63 billion)

5. General Electric (Revenue: $131.70 billion)

Ford Motor celebrated its 100th year anniversary in 2003.  To celebrate, the company put out five new limited-edition cars: the 2003 Ford Mustang, Focus, Taurus, Super Duty, and Explorer.  In honor of Henry Ford, the company’s founder, and echoing his policies from Ford’s early days, these models were offered in

1. Wal-Mart Stores (Revenue: $258.68 billion)

2. Exxon Corporation (Revenue: $213.20 billion)

3. General Motors (Revenue: $195.65 billion)

4. Ford Motor (Revenue: $164.50 billion)

5. General Electric (Revenue: $134.19 billion)

Wal-Mart held the top of the Fortune 500 list for the in 2004, making it only the third corporation to ever do so (it is in fact only the third corporation to reach the list at all, after General Motors and Exxon.)  All the companies on the list were doing well this year, as they took in a combined record $7.5 trillion in revenue and earned $445.6 billion in profit.

1. Wal-Mart Stores (Revenue: $288.19 billion)

2. Exxon Corporation (Revenue: $270.77 billion)

3. General Motors (Revenue: $193.52 billion)

4. Ford Motor (Revenue: $172.23 billion)

5. General Electric (Revenue: $152.36 billion)

Wal-Mart was vastly influential in the relief of Hurricane Katrina in 2005.  The superstore’s donations included , 1,500 truckloads of free merchandise, food for 100,000 meals, and jobs for its displaced workers, and the efficiency with which the company distributed these donations was held up as a model when compared to state-sponsored relief efforts.

1. Exxon Mobil Corporation (Revenue: $339.94 billion)

2. Wal-Mart Stores, Inc. (Revenue: $315.65 billion)

3. General Motors Corporation (Revenue: $192.60 billion)

4. Chevron Corporation (Revenue: $189.48 billion)

5. Ford Motor Company (Revenue: $177.21 billion)

General Motors, once America’s giant, in 2006. The company lost $10.4 billion in 2005, followed by $2 billion in 2006, partially due to heavy losses within its finance arm on subprime mortgage lending.

1. Wal-Mart Stores, Inc. (Revenue: $351.14 billion)

2. Exxon Mobil Corporation (Revenue: $347.25 billion)

3. General Motors Corporation (Revenue: $207.35 billion)

4. Chevron Corporation (Revenue: $200.57 billion)

5. ConocoPhillips (Revenue: $172.45 billion)

ConocoPhillips, an energy giant that made the top of the Fortune 500 list for the first time in 2007, that year to produce diesel fuel from pork, poultry, and beef fat. The companies claimed that this diesel would burn cleaner than oil-based fuel, and the move represented a great alliance between agricultural and energy industries.

1. Wal-Mart Stores (Revenue: $378.80 billion)

2. Exxon Mobil Corporation (Revenue: $372.82 billion)

3. Chevron Corporation (Revenue: $210.78 billion)

4. General Motors Corporation (Revenue: $182.35 billion)

5. ConocoPhillips (Revenue: $178.56 billion)

Wal-Mart made a major rebranding move in 2008: the company (from Wal-Mart with a star in the middle to Walmart, followed by a starburst), (from “Always Low Prices” to “Save Money. Live Better.”) 

1. Exxon Mobil Corporation (Revenue: $442.85 billion)

2. Wal-Mart Stores, Inc. (Revenue: $405.61 billion)

3. Chevron Corporation (Revenue: $263.16 billion)

4. ConocoPhillips (Revenue: $230.76 billion)

5. General Electric Company (Revenue: $183.21 billion)

2009 marked the first year since 1955 that General Motors was not in the top 5 of the Fortune 500, driven by a sharp downturn in auto purchases during the Great Recession.

Exxon Mobil invested big () into biofuels in 2009, when the company joined the biotech company Synthetic Genomics to build a greenhouse facility in San Diego that would study extracting oil from algae, as well as funding other research. This was a significant step for a company .

1. Wal-Mart Stores (Revenue: $408.21 billion)

2. Exxon Mobil Corporation (Revenue: $284.65 billion)

3. Chevron Corporation (Revenue: $163.53 billion)

4. General Electric Company (Revenue: $156.78 billion)

5. Bank of America Corporation (Revenue: $150.45 billion)

Bank of America’s lone appearance in the top five is indicative of the massive growth they saw from 2008 to 2009. The saw a  over the previous year.

1. Wal-Mart Stores (Revenue: $421.85 billion)

2. Exxon Mobil Corporation (Revenue: $354.67 billion)

3. Chevron Corporation (Revenue: $196.34 billion)

4. ConocoPhillips (Revenue: $184.97 billion)

5. Fannie Mae (Revenue: $153.83 billion)

Though it is unusual to see government-sponsored enterprises this high on the list, the Federal National Mortgage Association (Fannie Mae) accumulated unprecedented revenues in a year that proved to be big for mortgage lenders following the depths of the recession. 

1. Exxon Mobil Corporation (Revenue: $452.93 billion)

2. Wal-Mart Stores, Inc. (Revenue: $446.95 billion)

3. Chevron Corporation (Revenue: $245.62 billion)

4. ConocoPhillips (Revenue: $237.27 billion)

5. General Motors (Revenue: $150.28 billion)

General Motors’ reappearance in the top 5 in 2012 was the first time since the depths of the 2008 recession.

1. Wal-Mart Stores (Revenue: $469.16 billion)

2. Exxon Mobil Corporation (Revenue: $449.89 billion)

3. Chevron Corporation (Revenue: $233.90 billion)

4. Phillips 66 (Revenue: $169.55 billion)

5. Berkshire Hathaway, Inc. (Revenue: $162.46 billion)

��ǰ������’ got richer in 2013, as his flagship company Berkshire Hathaway earned a spot on the top five list for the first time. like GEICO, Dairy Queen, and Fruit of the Loom helped drive revenue gains.

1. Wal-Mart Stores (Revenue: $476.29 billion)

2. Exxon Mobil Corporation (Revenue: $407.67 billion)

3. Chevron Corporation (Revenue: $220.36 billion)

4. Berkshire Hathaway, Inc. (Revenue: $182.15 billion)

5. Apple (Revenue: $170.91 billion)

Apple entered the top five in 2014 and replaced Phillips 66, whose decline was ultimately due to a series of headwinds. Revenue would be harder to come by since their , and though Phillips 66 was not as affected as competitors, the provided a difficult challenge to overcome.

1. Wal-Mart Stores (Revenue: $485.65 billion)

2. Exxon Mobil Corporation (Revenue: $382.60 billion)

3. Chevron Corporation (Revenue: $203.78 billion)

4. Berkshire Hathaway, Inc. (Revenue: $194.67 billion)

5. Apple (Revenue: $182.80 billion)

WalMart continued to separate itself from Exxon Mobil as the clear top dog from a revenue perspective, and it set aside a percentage of those additional funds to make life better for the workers responsible. According to their , February saw a “$1 billion investment in higher wages, job training and scheduling enhancements” for workers.

1. Wal-Mart Stores (Revenue: $482.13 billion)

2. Exxon Mobil Corporation (Revenue: $246.20 billion)

3. Apple (Revenue: $233.72 billion)

4. Berkshire Hathaway, Inc. (Revenue: $210.82 billion)

5. McKesson (Revenue: $181.24 billion)

Apple jumped two spots up the list, and it is really no surprise when one considers the they released during 2015. These included, but were not limited to, several editions of the Apple Watch, the iPhone 6s, the iPad Pro, and a series of vastly improved operating systems.

1. Wal-Mart Stores (Revenue: $485.87 billion)

2. Berkshire Hathaway, Inc. (Revenue: $223.60 billion)

3. Apple (Revenue: $215.64 billion)

4. Exxon Mobil Corporation (Revenue: $205.00 billion)

5. McKesson (Revenue: $192.49 billion)

McKesson was able to cling to its spot on the top five list by warding off healthcare behemoths UnitedHealth Group and CVS Health (companies 6 and 7, respectively). A great deal of their continued success can be attributed to the