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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $222,627,000 | 34,807,807 | 34,807,807 |
| 2006 | $283,585,000 | 28,380,700 | 28,380,700 |
| 2007 | $1,674,430,000 | 309,601,955 | 309,601,955 |
| 2008 | $1,910,896,000 | 309,512,648 | 309,512,648 |
| 2009 | $1,247,151,000 | 167,945,008 | 167,945,008 |
| 2010 | $1,725,000,233 | 241,982,772 | 241,982,772 |
| 2011 | $2,261,324,720 | 303,568,035 | 303,568,035 |
Note: Quantity represents Weight in kilograms
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