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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $337,624,000 | 227,623,223 | 227,623,223 |
| 2006 | $382,843,000 | 223,107,766 | 223,107,766 |
| 2007 | $477,197,000 | 233,848,480 | 233,848,480 |
| 2008 | $566,281,000 | 224,204,188 | 224,204,188 |
| 2009 | $336,245,000 | 148,341,188 | 148,341,188 |
| 2010 | $337,269,750 | 155,920,500 | 155,920,500 |
| 2011 | $480,427,996 | 206,573,121 | 206,573,121 |
Note: Quantity represents Weight in kilograms
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