Figure 6 Waterborne Ton-Miles,,,
Ton-miles (billions),,,
Year,"Improved BTS, NTS",Eno,
1990,834,353,
1991,848,345,
1992,857,353,
1993,790,340,
1994,815,356,
1995,808,366,
1996,765,355,
1997,707,356,
1998,673,357,
1999,656,362,
2000,646,360,
2001,622,348,
2002,612,,
2003P,606,
Key: p = preliminary.,,