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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $121,949,278 | 870,335,335 | 870,335,335 |
| 2006 | $118,811,606 | 893,885,219 | 893,885,219 |
| 2007 | $154,382,679 | 1,110,452,904 | 1,110,452,904 |
| 2008 | $181,888,908 | 1,052,702,841 | 1,052,702,841 |
| 2009 | $338,140,673 | 2,661,102,128 | 2,661,102,128 |
| 2010 | $650,942,472 | 4,483,014,670 | 4,483,014,670 |
| 2011 | $1,096,723,719 | 6,264,314,228 | 6,264,314,228 |
Note: Quantity represents Weight in kilograms
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