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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $313,569,905 | 361,209,172 | 361,209,172 |
| 2006 | $276,203,458 | 289,645,710 | 289,645,710 |
| 2007 | $607,262,056 | 627,059,056 | 627,059,056 |
| 2008 | $505,601,877 | 459,262,177 | 459,262,177 |
| 2009 | $477,152,703 | 476,468,916 | 476,468,916 |
| 2010 | $332,347,627 | 320,757,169 | 320,757,169 |
| 2011 | $215,731,383 | 194,956,041 | 194,956,041 |
Note: Quantity represents Weight in kilograms
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