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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $524,015,335 | 1,098,917,006 | 1,098,917,006 |
| 2006 | $940,581,782 | 3,887,683 | 0 |
| 2007 | $1,035,196,919 | 1,202,496,130 | 1,202,496,130 |
| 2008 | $1,674,658,417 | 2,419,115,185 | 2,419,115,185 |
| 2009 | $1,329,536,396 | 2,969,517,659 | 2,969,517,659 |
| 2010 | $1,641,543,075 | 3,085,120,433 | 3,085,120,433 |
| 2011 | $2,107,086,470 | 3,175,346,975 | 3,175,346,975 |
Note: Quantity represents Weight in kilograms
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