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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,430,602,356 | 9,387,677 | 9,387,677 |
| 2006 | $1,383,867,495 | 13,414,716 | 13,414,716 |
| 2007 | $2,482,754,229 | 22,347,758 | 22,347,758 |
| 2008 | $1,906,279,573 | 16,305,310 | 16,305,310 |
| 2009 | $1,282,478,986 | 16,598,405 | 16,598,405 |
| 2010 | $1,499,664,018 | 19,939,604 | 19,939,604 |
| 2011 | $1,458,476,708 | 22,613,005 | 22,613,005 |
Note: Quantity represents Weight in kilograms
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