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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $12,904 | 4,351 | 4,351 |
| 2006 | $10,252 | 15,503 | 15,503 |
| 2007 | $15,722 | 22,064 | 22,064 |
| 2008 | $43,355 | 35,476 | 35,476 |
| 2009 | $75,082 | 73,323 | 73,323 |
| 2010 | $204,794 | 135,080 | 135,080 |
| 2011 | $51,577 | 50,198 | 50,198 |
Note: Quantity represents Weight in kilograms
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