NOTES: Percents may not add to 100 due to rounding.Transportation services
cover establishments furnishing services incidental to transportation (e.g.,
forwarding and packing services and the arrangement of passenger and freight
transportation).
SOURCE: U.S. Department of
Transportation, Bureau of Transportation Statistics, calculations based on
data from U.S. Department of Commerce, Bureau of Economic Analysis,
"Gross Domestic Product by Industry," available at
http://www.bea.gov/bea/dn2/gpo.htm, as of February 2004.