Figure 2,,,,
"Domestic Ton-Miles, Gross Domestic Product, and Resident Population: 1975–1999",,,,
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(Index: 1975 = 1.0),,,,
Year,GDP,Ton-miles,Population,Ton-miles per $ GDP
1975,1.00,1.00,1.00,1.00
1980,1.20,1.31,1.05,1.09
1985,1.40,1.29,1.10,0.92
1990,1.64,1.40,1.16,0.85
1991,1.63,1.41,1.17,0.87
1992,1.68,1.46,1.18,0.87
1993,1.73,1.47,1.19,0.85
1994,1.80,1.54,1.21,0.86
1995,1.85,1.60,1.22,0.86
1996,1.91,1.63,1.23,0.85
1997,2.00,1.64,1.24,0.82
1998,2.08,1.62,1.25,0.78,,
1999,2.17,1.67,1.26,0.77,,
KEY: GDP = Gross Domestic Product.,,,,,,
"SOURCE: GDP data—U.S. Department of Commerce, Bureau of Economic Analysis, available at www.bea.doc.gov/bea/dn/ gdplev.htm, as of Apr. 20, 2001. Ton-miles data—U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics 2001 (Washington, DC: 2002). Population data—U.S. Department of Commerce, U.S. Census Bureau, available at www.census.gov/ population/estimates/nation/popclockest.txt, as of Apr. 20, 2001.",,,,,,
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