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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $20,871,843 | 838,378 | 838,378 |
| 2006 | $37,868,461 | 1,130,278,380 | 1,130,278,380 |
| 2007 | $57,083,617 | 1,757,600,000 | 1,757,600,000 |
| 2008 | $137,171,751 | 1,670,500,000 | 1,670,500,000 |
| 2009 | $75,843,189 | 1,019,221,146 | 1,019,221,146 |
| 2010 | $43,962,909 | 619,324,015 | 619,324,015 |
| 2011 | $128,256,225 | 1,223,318,020 | 1,223,318,020 |
Note: Quantity represents Weight in kilograms
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