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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $384,584,000 | 6,050,940 | 6,050,940 |
| 2006 | $400,904,000 | 5,318,828 | 5,318,828 |
| 2007 | $465,998,000 | 4,770,159 | 4,770,159 |
| 2008 | $499,029,000 | 4,766,673 | 4,766,673 |
| 2009 | $387,735,000 | 3,540,583 | 3,540,583 |
| 2010 | $444,937,931 | 3,785,859 | 3,785,859 |
| 2011 | $525,368,118 | 4,332,286 | 4,332,286 |
Note: Quantity represents Weight in kilograms
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