NOTES: Railroad diesel fuel price and highway vehicle- and aircraft-miles of travel data were not available for 2004 when this report was prepared. To eliminate the effects of inflation over time, the Bureau of Transportation Statistics converted current dollars (see table 14-4 in appendix B) to chained 2000 dollars.
SOURCES: Except railroad diesel—U.S. Department of Energy, Energy Information Administration, Monthly Energy Review, tables 9.1 (crude oil), 9.4 (motor gasoline), and 9.7 (aviation, jet, and diesel no. 2), available at http://www.eia.doe.gov/, as of May 2005. Railroad diesel—Association of American Railroads, Railroad Facts 2004 (Washington, DC: 2004), p. 61. Vehicle and aircraft-miles of travel per capita—U.S. Department of Transportation (USDOT), Research and Innovative Technology Administration, Bureau of Transportation Statistics (BTS), calculations using data from USDOT, BTS, National Transportation Statistics 2004, table 1-32, available at http://www.bts.gov/, as of May 2005. Population—U.S. Department of Commerce, U.S. Census Bureau, Statistical Abstract of the United States, section 1, table 2, available at http://www.census.gov/, as of May 2005.