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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $79,696,161 | 2,669,619,448 | 2,669,619,448 |
| 2006 | $113,543,754 | 2,790,262,960 | 2,790,262,960 |
| 2007 | $165,242,812 | 3,584,696,672 | 3,584,696,672 |
| 2008 | $259,904,499 | 3,543,723,529 | 3,543,723,529 |
| 2009 | $360,874,638 | 6,181,246,688 | 6,181,246,688 |
| 2010 | $708,541,716 | 7,011,160,868 | 7,011,160,868 |
| 2011 | $1,200,144,995 | 8,167,475,284 | 8,167,475,284 |
Note: Quantity represents Weight in kilograms
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