A study by the Global Business Travel Association titled "The U.S. Business Travel Industry: Road Warriors' Impact on Jobs and the Economy" found that corporate travel played a significant role in improving the U.S. economy, accounting for $491 billion -- or 3% -- of the country's gross domestic product in 2012. The study also found that 452 million business trips were made in 2012, with corporate expenditures on travel amounting to $384 billion.

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