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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $96,975,123 | 418,346,183 | 418,346,183 |
| 2006 | $89,706,105 | 515,446,366 | 515,446,366 |
| 2007 | $154,563,232 | 643,288,466 | 643,288,466 |
| 2008 | $754,928,165 | 1,700,189,538 | 1,700,189,538 |
| 2009 | $211,104,808 | 480,009,162 | 480,009,162 |
| 2010 | $249,326,087 | 709,802,721 | 709,802,721 |
| 2011 | $155,153,709 | 491,196,746 | 491,196,746 |
Note: Quantity represents Weight in kilograms
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