TABLE 1-9a Change in Domestic Freight Ton-Miles by Mode: 1992–2002,,,,,,,,,,, "1992 = 100 ",,,,,,,,,,, ,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002 Air,100,105,109,116,125,126,129,132,144,121,123 Truck,100,104,111,116,119,125,128,132,134,137,140 Railroad,100,103,111,120,125,127,132,137,141,146,146 Water,100,92,95,94,89,83,79,77,75,73,71 Oil and natural gas pipeline ,100,101,102,105,107,107,107,107,104,102,104 All modes,100,101,105,110,111,112,113,115,116,116,118 "NOTE: To make it easier to compare data of differing magnitudes over time, the Bureau of Transportation Statistics divided the data for all years in each category (see table 1-9b) by the initial year value and multiplied the result by 100.",,,,,,,,,,, " SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, calculations using data in table 1-9b.",,,,,,,,,,, ,,,,,,,,,,, ,,,,,,,,,,, ,,,,,,,,,,, ,,,,,,,,,,, ,,,,,,,,,,, ,,,,,,,,,,,