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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $17,054,540 | 21,750,985 | 21,750,985 |
| 2006 | $12,651,586 | 13,122,795 | 13,122,795 |
| 2007 | $6,693,549 | 6,974,900 | 6,974,900 |
| 2008 | $2,142,320 | 1,220,000 | 1,220,000 |
| 2009 | $5,986,560 | 5,481,613 | 5,481,613 |
| 2010 | $38,046,947 | 34,080,484 | 34,080,484 |
| 2011 | $32,652,167 | 36,260,251 | 36,260,251 |
Note: Quantity represents Weight in kilograms
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