Figure 2 - Domestic Ton-Miles, Gross Domestic Product, and Resident Population: 1975-1999

Figure 2 - Domestic Ton-Miles, Gross Domestic Product, and Resident Population: 1975-1999

(Index: 1975 = 1.0)

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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.