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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,003 | 3,164 | 3,164 |
| 2006 | $529 | 6,851 | 6,851 |
| 2007 | $766 | 3,526 | 3,526 |
| 2008 | $46,493 | 27,245 | 27,245 |
| 2009 | $30,958 | 34,561 | 34,561 |
| 2010 | $43,038 | 20,510 | 20,510 |
| 2011 | $36,749 | 45,502 | 45,502 |
Note: Quantity represents Weight in kilograms
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