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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $668,350,311 | 2,320,053 | 2,320,053 |
| 2006 | $676,406,816 | 2,968,906 | 2,968,906 |
| 2007 | $345,161,586 | 2,600,714 | 2,600,714 |
| 2008 | $452,031,830 | 0 | 0 |
| 2009 | $762,684,568 | 3,909,371 | 3,909,371 |
| 2010 | $718,550,500 | 4,146,516 | 4,146,516 |
| 2011 | $716,201,723 | 5,822,283 | 5,822,283 |
Note: Quantity represents Weight in kilograms
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