Figure 4-1 Modal For-hire Transportation Services Contribution to U.S. Gross Domestic Product (GDP): 2011
SOURCES: U.S. Department of Commerce, Bureau of Economic Analysis, Industry Economic Accounts, as cited in the U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, table 3-1, available at https://www.bts.dot.gov/archive/publications/national_transportation_statistics/index as of March 2013.