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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $480,360,000 | 66,323,576 | 66,323,576 |
| 2006 | $543,997,000 | 74,380,373 | 74,380,373 |
| 2007 | $638,697,000 | 97,859,600 | 97,859,600 |
| 2008 | $669,024,000 | 85,024,167 | 85,024,167 |
| 2009 | $491,298,000 | 71,476,500 | 71,476,500 |
| 2010 | $653,177,449 | 87,021,277 | 87,021,277 |
| 2011 | $701,835,562 | 72,932,651 | 72,932,651 |
Note: Quantity represents Weight in kilograms
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