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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $157,572,215 | 206,830,087 | 206,830,087 |
| 2006 | $195,343,288 | 281,087,087 | 281,087,087 |
| 2007 | $278,651,767 | 349,663,153 | 349,663,153 |
| 2008 | $435,652,382 | 399,330,927 | 399,330,927 |
| 2009 | $187,095,466 | 217,949,597 | 217,949,597 |
| 2010 | $367,873,095 | 431,887,212 | 431,887,212 |
| 2011 | $556,676,178 | 567,675,787 | 567,675,787 |
Note: Quantity represents Weight in kilograms
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