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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $261,635,528 | 1,231,256,447 | 1,231,256,447 |
| 2006 | $233,031,692 | 1,140,580,502 | 1,140,580,502 |
| 2007 | $325,004,470 | 1,537,063,994 | 1,537,063,994 |
| 2008 | $343,875,742 | 1,517,114,245 | 1,517,114,245 |
| 2009 | $441,767,805 | 1,581,810,620 | 1,581,810,620 |
| 2010 | $385,396,343 | 1,497,771,462 | 1,497,771,462 |
| 2011 | $476,321,285 | 1,560,302,713 | 1,560,302,713 |
Note: Quantity represents Weight in kilograms
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