NOTES: No data are available for water transportation or natural gas pipeline. Data for local trucking, bus carriers, and petroleum pipeline are not available beyond 2000. Petroleum pipeline productivity is output per employee. See table 8-2 in appendix B for detailed notes on these datasets.
SOURCES: Transportation—U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, calculations based on data from U.S. Department of Labor (USDOL), Bureau of Labor Statistics (BLS), Office of Productivity and Technology, “Industry Productivity Database,” available at http://www.bls.gov/, as of November 2004; and U.S. Department of Commerce, Bureau of Economic Analysis, “Gross Domestic Product by Industry,” available at http://www.bea.gov/, as of November 2004. Manufacturing and business—USDOL, BLS, Office of Productivity and Technology, “Industry Productivity Database,” available at http://www.bls.gov/, as of November 2004.