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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,894,152,817 | 10,437,793,208 | 10,437,793,208 |
| 2006 | $5,172,331,341 | 10,793,700,971 | 10,793,700,971 |
| 2007 | $5,831,983,470 | 10,293,388,792 | 10,293,388,792 |
| 2008 | $7,683,599,844 | 9,853,769,253 | 9,853,769,253 |
| 2009 | $3,354,606,765 | 6,728,771,782 | 6,728,771,782 |
| 2010 | $5,541,204,760 | 9,305,267,383 | 9,305,267,383 |
| 2011 | $7,874,159,855 | 9,421,807,539 | 9,421,807,539 |
Note: Quantity represents Weight in kilograms
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