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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,311,211,065 | 51,362,195 | 51,362,195 |
| 2006 | $3,297,300,000 | 73,276,113 | 73,276,113 |
| 2007 | $4,533,516,722 | 0 | 0 |
| 2008 | $4,387,636,232 | 0 | 0 |
| 2009 | $4,366,221,102 | 0 | 0 |
| 2010 | $3,207,828,449 | 0 | 0 |
| 2011 | $3,258,786,951 | 0 | 0 |
Note: Quantity represents Weight in kilograms
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