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| Year | Trade Value | Weight (kg) | Quantity |
| 2006 | $418,180,743 | 4,220,078 | 4,220,078 |
| 2007 | $547,353,740 | 6,351,858 | 6,351,858 |
| 2008 | $661,541,612 | 5,391,852 | 5,391,852 |
| 2009 | $650,153,542 | 5,593,594 | 5,593,594 |
| 2010 | $510,211,757 | 5,818,198 | 5,818,198 |
| 2011 | $489,935,278 | 7,420,304 | 7,420,304 |
Note: Quantity represents Weight in kilograms
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