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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,670,977,753 | 61,187,591 | 61,187,591 |
| 2006 | $2,249,756,454 | 82,381,214 | 82,381,214 |
| 2007 | $2,284,297,590 | 73,487,972 | 73,487,972 |
| 2008 | $1,858,327,234 | 0 | 0 |
| 2009 | $1,583,251,233 | 34,230,915 | 34,230,915 |
| 2010 | $1,884,913,241 | 31,881,404 | 31,881,404 |
| 2011 | $1,853,115,038 | 27,502,173 | 27,502,173 |
Note: Quantity represents Weight in kilograms
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