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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $324,488,722 | 688,891,461 | 688,891,461 |
| 2006 | $428,496,704 | 722,175,686 | 722,175,686 |
| 2007 | $151,016,197 | 226,288,199 | 226,288,199 |
| 2008 | $231,517,285 | 277,483,028 | 277,483,028 |
| 2009 | $156,863,904 | 281,228,742 | 281,228,742 |
| 2010 | $343,292,961 | 472,647,941 | 472,647,941 |
| 2011 | $469,623,978 | 508,623,011 | 508,623,011 |
Note: Quantity represents Weight in kilograms
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