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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,062,633,263 | 2,676,497,235 | 2,676,497,235 |
| 2006 | $1,185,030,797 | 3,359,890,845 | 3,359,890,845 |
| 2007 | $1,481,232,602 | 3,529,270,038 | 3,529,270,038 |
| 2008 | $1,947,361,861 | 3,146,009,235 | 3,146,009,235 |
| 2009 | $1,708,997,149 | 4,371,640,429 | 4,371,640,429 |
| 2010 | $1,880,176,627 | 3,706,722,595 | 3,706,722,595 |
| 2011 | $2,339,451,887 | 3,765,776,736 | 3,765,776,736 |
Note: Quantity represents Weight in kilograms
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