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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $15,760 | 9,360 | 9,360 |
| 2006 | $27,365 | 8,299 | 8,299 |
| 2007 | $48,273 | 16,883 | 16,883 |
| 2008 | $76,533 | 43,729 | 43,729 |
| 2009 | $17,097 | 12,252 | 12,252 |
| 2010 | $40,627 | 19,847 | 19,847 |
| 2011 | $76,105 | 29,839 | 29,839 |
Note: Quantity represents Weight in kilograms
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