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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $591,489,000 | 1,514,341,400 | 1,514,341,400 |
| 2006 | $640,194,000 | 1,573,961,100 | 1,573,961,100 |
| 2007 | $757,044,000 | 1,482,661,434 | 1,482,661,434 |
| 2008 | $1,002,978,000 | 1,636,935,764 | 1,636,935,764 |
| 2009 | $860,153,000 | 1,619,550,783 | 1,619,550,783 |
| 2010 | $978,184,245 | 1,947,931,000 | 1,947,931,000 |
| 2011 | $1,232,880,606 | 2,013,091,972 | 2,013,091,972 |
Note: Quantity represents Weight in kilograms
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