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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $638,641,442 | 173,171,891 | 173,171,891 |
| 2006 | $721,757,058 | 176,063,245 | 176,063,245 |
| 2007 | $989,267,764 | 220,585,425 | 220,585,425 |
| 2008 | $1,392,755,831 | 251,613,642 | 251,613,642 |
| 2009 | $607,293,525 | 102,503,891 | 102,503,891 |
| 2010 | $735,805,901 | 141,821,761 | 141,821,761 |
| 2011 | $1,118,573,568 | 196,132,795 | 196,132,795 |
Note: Quantity represents Weight in kilograms
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