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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $414,364,735 | 434,374,542 | 434,374,542 |
| 2006 | $335,594,066 | 368,676,820 | 368,676,820 |
| 2007 | $195,848,101 | 191,717,414 | 191,717,414 |
| 2008 | $211,254,458 | 188,204,165 | 188,204,165 |
| 2009 | $114,219,563 | 170,740,992 | 170,740,992 |
| 2010 | $205,662,789 | 224,978,508 | 224,978,508 |
| 2011 | $326,124,199 | 258,413,497 | 258,413,497 |
Note: Quantity represents Weight in kilograms
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