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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $253,626,000 | 25,384,400 | 25,384,400 |
| 2006 | $282,754,000 | 27,172,896 | 27,172,896 |
| 2007 | $385,881,000 | 30,755,059 | 30,755,059 |
| 2008 | $446,050,000 | 32,210,544 | 32,210,544 |
| 2009 | $310,462,000 | 24,830,920 | 24,830,920 |
| 2010 | $422,441,799 | 106,681,008 | 106,681,008 |
| 2011 | $615,686,027 | 164,090,098 | 164,090,098 |
Note: Quantity represents Weight in kilograms
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