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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $6,100 | 3,608 | 3,608 |
| 2006 | $11,600 | 5,971 | 5,971 |
| 2007 | $23,600 | 10,989 | 10,989 |
| 2008 | $33,500 | 13,141 | 13,141 |
| 2009 | $89,600 | 36,446 | 36,446 |
| 2010 | $9,200 | 3,228 | 3,228 |
| 2011 | $13,600 | 3,388 | 3,388 |
Note: Quantity represents Weight in kilograms
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