Figure 5 Railroad Ton-Miles,,,
Ton-miles (billions),,,
Year,Improved BTS,NTS,Eno
1990,"1,064","1,034","1,091"
1991,"1,042","1,039","1,100"
1992,"1,098","1,067","1,138"
1993,"1,135","1,109","1,183"
1994,"1,221","1,201","1,275"
1995,"1,317","1,306","1,375"
1996,"1,377","1,356","1,426"
1997,"1,391","1,349","1,421"
1998,"1,448","1,377","1,442"
1999,"1,504","1,433","1,499"
2000,"1,546","1,466","1,534"
2001,"1,599","1,495","1,558"
2002,"1,606",,
2003P,"1,604",,
Key: p = preliminary.,,,