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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $792,150,000 | 16,529,794 | 16,529,794 |
| 2006 | $516,700,000 | 7,446,505 | 7,446,505 |
| 2007 | $1,638,208,000 | 18,263,457 | 18,263,457 |
| 2008 | $2,468,935,000 | 36,529,740 | 36,529,740 |
| 2009 | $2,419,649,000 | 60,980,703 | 60,980,703 |
| 2010 | $1,420,114,049 | 34,130,751 | 34,130,751 |
| 2011 | $1,069,197,048 | 23,293,866 | 23,293,866 |
Note: Quantity represents Weight in kilograms
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