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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $371,614,581 | 1,490,580,756 | 1,490,580,756 |
| 2006 | $392,292,868 | 1,709,149,555 | 1,709,149,555 |
| 2007 | $505,053,478 | 1,915,638,777 | 1,915,638,777 |
| 2008 | $792,419,080 | 1,830,449,127 | 1,830,449,127 |
| 2009 | $708,444,774 | 1,692,998,628 | 1,692,998,628 |
| 2010 | $694,024,634 | 1,777,167,324 | 1,777,167,324 |
| 2011 | $652,922,197 | 1,523,435,640 | 1,523,435,640 |
Note: Quantity represents Weight in kilograms
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