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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $314,622,000 | 659,809,594 | 659,809,594 |
| 2006 | $389,918,000 | 683,836,700 | 683,836,700 |
| 2007 | $403,177,000 | 569,688,000 | 569,688,000 |
| 2008 | $603,208,000 | 756,320,000 | 756,320,000 |
| 2009 | $440,784,000 | 819,668,800 | 819,668,800 |
| 2010 | $662,439,549 | 886,890,500 | 886,890,500 |
| 2011 | $893,994,055 | 982,398,207 | 982,398,207 |
Note: Quantity represents Weight in kilograms
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