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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $918,126,041 | 126,442,412 | 126,442,412 |
| 2006 | $834,919,399 | 114,983,366 | 114,983,366 |
| 2007 | $836,827,375 | 118,545,115 | 118,545,115 |
| 2008 | $716,085,162 | 0 | 0 |
| 2009 | $519,025,950 | 0 | 0 |
| 2010 | $619,453,635 | 0 | 0 |
| 2011 | $586,697,634 | 138,643,324 | 138,643,324 |
Note: Quantity represents Weight in kilograms
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