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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $256,116,694 | 21,159,992 | 21,159,992 |
| 2006 | $396,699,364 | 28,194,187 | 28,194,187 |
| 2007 | $461,004,580 | 29,644,527 | 29,644,527 |
| 2008 | $720,491,375 | 39,556,649 | 39,556,649 |
| 2009 | $735,453,326 | 38,881,964 | 38,881,964 |
| 2010 | $725,906,251 | 49,874,889 | 49,874,889 |
| 2011 | $908,566,366 | 54,914,268 | 54,914,268 |
Note: Quantity represents Weight in kilograms
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