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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $31,674 | 15,938 | 15,938 |
| 2006 | $49,011 | 29,441 | 29,441 |
| 2007 | $109,762 | 163,712 | 163,712 |
| 2008 | $18,555 | 13,899 | 13,899 |
| 2009 | $62,085 | 31,678 | 31,678 |
| 2010 | $65,417 | 87,769 | 87,769 |
| 2011 | $225,563 | 307,446 | 307,446 |
Note: Quantity represents Weight in kilograms
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