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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $276,774,049 | 150,799,529 | 150,799,529 |
| 2006 | $406,594,976 | 220,641,646 | 220,641,646 |
| 2007 | $488,375,018 | 253,358,417 | 253,358,417 |
| 2008 | $481,947,825 | 139,033,798 | 139,033,798 |
| 2009 | $406,699,685 | 95,271,159 | 95,271,159 |
| 2010 | $695,034,432 | 487,419,320 | 487,419,320 |
| 2011 | $613,196,281 | 150,388,239 | 150,388,239 |
Note: Quantity represents Weight in kilograms
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