(Short tons, thousands)
| 1999 | 2000 | 2001 | 2002 | 2003 | |
|---|---|---|---|---|---|
| Imports | 280 | 304 | 278 | 279 | 277 |
| Exports | 236 | 252 | 228 | 202 | 235 |
| Total | 516 | 556 | 506 | 481 | 512 |
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, Form 41 Traffic - Segment Data, various years, as of Sept. 16, 2004.