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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,908 | 549 | 549 |
| 2006 | $422 | 175 | 175 |
| 2007 | $15,719 | 5,362 | 5,362 |
| 2008 | $76,464 | 24,092 | 24,092 |
| 2009 | $158,740 | 47,028 | 47,028 |
| 2010 | $81,210 | 24,720 | 24,720 |
| 2011 | $113,075 | 34,866 | 34,866 |
Note: Quantity represents Weight in kilograms
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