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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $150,114,144 | 885,207,735 | 885,207,735 |
| 2006 | $201,969,081 | 1,068,748,195 | 1,068,748,195 |
| 2007 | $320,452,518 | 1,085,702,223 | 1,085,702,223 |
| 2008 | $313,376,614 | 821,234,972 | 821,234,972 |
| 2009 | $200,207,072 | 837,846,833 | 837,846,833 |
| 2010 | $202,717,065 | 763,991,468 | 763,991,468 |
| 2011 | $288,858,402 | 847,253,611 | 847,253,611 |
Note: Quantity represents Weight in kilograms
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