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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $583,048,568 | 1,129,452 | 1,129,452 |
| 2006 | $574,951,279 | 933,430 | 933,430 |
| 2007 | $764,720,827 | 910,073 | 910,073 |
| 2008 | $430,759,326 | 814,144 | 814,144 |
| 2009 | $307,195,724 | 468,219 | 468,219 |
| 2010 | $497,112,546 | 692,174 | 692,174 |
| 2011 | $645,115,978 | 459,005 | 459,005 |
Note: Quantity represents Weight in kilograms
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