Table 16,,,,,
U.S. Pipeline Ton-Miles: 1990 - 2003,,,,,
(Billions),,,,,
Year,Pipeline total,Liquid pipelines (oil & oil products),Natural gas pipelines,Total,Pipeline's share of total ton-miles (percent)
1980,866 ,588 ,278 ,"3,353 ", 25.8 
1990,822 ,584 ,238 ," 3,584 ", 22.9 
2000,874 ,577 ,297 ," 4,285 ", 20.4 
2001,859 ,576 ,283 ," 4,317 ", 19.9 
2002,879 ,586 ,293 ," 4,366 ", 20.1 
2003,868 ,590 ,278 ," 4,357 ", 19.9 
"
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, Journal of Transportation and Statistics, Volume 8 Number 1, 2005, Scott M. Dennis, ""Improved Estimates of Ton-Miles,"" pp 23-44.",,,,,