"FIGURE 1-3. Freight Transportation Activity, Energy Consumption, and Energy Efficiency Indexes, 1990=1",,,,,,,,,,,
Freight,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000
Activity,1.00,1.00,1.03,1.04,1.09,1.13,1.15,1.15,1.17,1.19,1.21
Energy,1.00,0.99,1.00,1.01,1.07,1.12,1.14,1.15,1.17,1.23,1.28
Efficiency,1.00,1.02,1.03,1.03,1.02,1.01,1.01,1.00,1.00,0.96,0.94
"Source: Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics 2002, tables 1-44, 4-6.",,,,,,,,,,,