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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $45,086,144 | 2,359,305,026 | 2,359,305,026 |
| 2006 | $23,704,014 | 1,280,421,217 | 1,280,421,217 |
| 2007 | $24,891,280 | 1,086,901,089 | 1,086,901,089 |
| 2008 | $42,788,239 | 1,180,731,252 | 1,180,731,252 |
| 2009 | $64,386,382 | 2,026,530,525 | 2,026,530,525 |
| 2010 | $54,209,202 | 0 | 0 |
| 2011 | $85,278,865 | 3,414,093,627 | 3,414,093,627 |
Note: Quantity represents Weight in kilograms
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