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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $516,761,733 | 2,402,163,080 | 2,402,163,080 |
| 2006 | $429,858,544 | 13,170,397 | 13,170,397 |
| 2007 | $719,324,103 | 21,135,177 | 21,135,177 |
| 2008 | $573,046,752 | 108,791,482 | 108,791,482 |
Note: Quantity represents Weight in kilograms
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