(Short tons, thousands)
| 2000 | 2005 | 2006 | 2007 | 2008 | |
|---|---|---|---|---|---|
| Imports | 598 | 533 | 540 | 529 | 472 |
| Exports | 423 | 393 | 402 | 445 | 436 |
| Total | 1,021 | 926 | 941 | 974 | 908 |
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, Form 41 Traffic-Segment Data, various years, as of July 20, 2009.