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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $760,617,207 | 39,326,396 | 39,326,396 |
| 2006 | $760,856,653 | 39,338,776 | 39,338,776 |
| 2007 | $723,823,814 | 0 | 0 |
| 2008 | $726,525,583 | 0 | 0 |
| 2009 | $581,377,794 | 0 | 0 |
| 2010 | $825,644,549 | 100,166,332 | 100,166,332 |
| 2011 | $1,011,053,879 | 99,471,035 | 99,471,035 |
Note: Quantity represents Weight in kilograms
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