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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $539,927,000 | 347,805,600 | 347,805,600 |
| 2006 | $826,947,000 | 391,469,700 | 391,469,700 |
| 2007 | $1,104,352,000 | 344,365,500 | 344,365,500 |
| 2008 | $922,574,000 | 362,265,300 | 362,265,300 |
| 2009 | $428,278,000 | 280,129,600 | 280,129,600 |
| 2010 | $944,988,584 | 417,273,300 | 417,273,300 |
| 2011 | $927,253,367 | 400,371,014 | 400,371,014 |
Note: Quantity represents Weight in kilograms
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