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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $10,751,341,853 | 1,545,621,313 | 1,545,621,313 |
| 2006 | $11,646,362,722 | 1,425,942,472 | 1,425,942,472 |
| 2007 | $9,983,092,435 | 0 | 0 |
| 2008 | $8,907,598,252 | 987,340,060 | 987,340,060 |
| 2009 | $7,299,054,720 | 723,095,642 | 723,095,642 |
| 2010 | $9,114,409,003 | 952,428,631 | 952,428,631 |
| 2011 | $12,048,405,659 | 1,209,884,756 | 1,209,884,756 |
Note: Quantity represents Weight in kilograms
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