(Short tons, thousands)
| 2000 | 2005 | 2006 | 2007 | 2008 | |
|---|---|---|---|---|---|
| Imports | 304 | 336 | 345 | 356 | 321 |
| Exports | 252 | 293 | 302 | 322 | 304 |
| TOTAL | 556 | 629 | 646 | 678 | 625 |
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.