| Metric tons (thousands) | |
|---|---|
| January 2007 | 113,601 |
| February 2007 | 98,219 |
| March 2007 | 113,051 |
| April 2007 | 112,550 |
| May 2007 | 120,493 |
| June 2007 | 114,422 |
| July 2007 | 116,822 |
| August 2007 | 122,559 |
| September 2007 | 113,863 |
| October 2007 | 120,019 |
| November 2007 | 117,414 |
| December 2007 | 113,686 |
| January 2008 | 116,958 |
| February 2008 | 110,072 |
| March 2008 | 111,066 |
| April 2008 | 115,603 |
| May 2008 | 116,779 |
| June 2008 | 118,578 |
NOTES: Import and export tonnage helps identify the volume of cargo flowing through U.S. ports and the resulting vessel traffic on U.S. coastal waters. It also helps identify needs for intermodal truck and rail traffic. Most U.S. coastal ports handle both foreign and domestic cargoes.
A metric ton is equal to 2,204.6 pounds.
SOURCES: April 1998-December 2005: U.S. Department of Transportation, Maritime Administration, U.S. Foreign Waterborne Transportation Statistics Data, September 2006. January 2006-present: U.S. Department of Commerce, U.S. Census Bureau, Foreign Trade Statistics, available at http://www.census.gov/foreign-trade/statistics/index.html as of August 2008.