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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $142,606,454 | 238,954,442 | 238,954,442 |
| 2006 | $171,526,824 | 290,874,894 | 290,874,894 |
| 2007 | $258,177,450 | 371,715,972 | 371,715,972 |
| 2008 | $287,857,317 | 327,453,459 | 327,453,459 |
| 2009 | $218,327,453 | 340,270,438 | 340,270,438 |
| 2010 | $229,199,960 | 310,817,608 | 310,817,608 |
| 2011 | $163,501,544 | 150,723,695 | 150,723,695 |
Note: Quantity represents Weight in kilograms
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