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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $534,007,389 | 484,369 | 484,369 |
| 2006 | $466,656,270 | 435,038 | 435,038 |
| 2007 | $435,729,788 | 491,042 | 491,042 |
| 2008 | $553,756,148 | 598,149 | 598,149 |
| 2009 | $429,796,564 | 528,077 | 528,077 |
| 2010 | $556,149,743 | 580,281 | 580,281 |
| 2011 | $646,910,646 | 654,866 | 654,866 |
Note: Quantity represents Weight in kilograms
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