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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $529,669,188 | 1,329,418 | 1,329,418 |
| 2006 | $413,553,656 | 1,429,957 | 1,429,957 |
| 2007 | $339,091,746 | 1,166,010 | 1,166,010 |
| 2008 | $446,586,392 | 0 | 0 |
| 2009 | $365,227,767 | 1,407,557 | 1,407,557 |
| 2010 | $408,510,092 | 1,555,978 | 1,555,978 |
| 2011 | $526,834,393 | 1,436,678 | 1,436,678 |
Note: Quantity represents Weight in kilograms
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