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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $765,914,302 | 227,167,893 | 227,167,893 |
| 2006 | $814,250,613 | 226,206,757 | 226,206,757 |
| 2007 | $861,493,007 | 241,568,979 | 241,568,979 |
| 2008 | $1,009,012,535 | 0 | 0 |
| 2009 | $769,549,406 | 174,832,259 | 174,832,259 |
| 2010 | $1,172,356,723 | 312,245,095 | 312,245,095 |
| 2011 | $1,232,404,389 | 318,583,135 | 318,583,135 |
Note: Quantity represents Weight in kilograms
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