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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $12,339 | 12,160 | 12,160 |
| 2006 | $24,167 | 23,940 | 23,940 |
| 2007 | $13,322 | 13,680 | 13,680 |
| 2008 | $28,849 | 19,640 | 19,640 |
| 2009 | $34,854 | 29,360 | 29,360 |
| 2010 | $27,730 | 21,280 | 21,280 |
| 2011 | $2,147 | 1,520 | 1,520 |
Note: Quantity represents Weight in kilograms
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