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| Year | Trade Value | Weight (kg) | Quantity |
| 2007 | $96,767,000 | 1,006,500 | 1,006,500 |
| 2008 | $484,737,000 | 5,834,584 | 5,834,584 |
| 2009 | $456,332,000 | 7,339,040 | 7,339,040 |
| 2010 | $460,354,595 | 8,642,962 | 8,642,962 |
| 2011 | $488,371,349 | 10,457,302 | 10,457,302 |
Note: Quantity represents Weight in kilograms
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