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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $51,829 | 6,290 | 6,290 |
| 2006 | $56,370 | 10,113 | 10,113 |
| 2007 | $67,868 | 14,463 | 14,463 |
| 2008 | $115,422 | 44,953 | 44,953 |
| 2009 | $131,189 | 97,804 | 97,804 |
| 2010 | $87,653 | 506,431 | 506,431 |
| 2011 | $176,131 | 366,366 | 366,366 |
Note: Quantity represents Weight in kilograms
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