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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $149 | 6,000 | 6,000 |
| 2006 | $135 | 7,600 | 7,600 |
| 2007 | $1,862 | 19,404 | 19,404 |
| 2008 | $1,452 | 14,450 | 14,450 |
| 2009 | $177,047 | 1,230,204 | 1,230,204 |
| 2010 | $642,200 | 4,492,350 | 4,492,350 |
| 2011 | $756,309 | 4,978,854 | 4,978,854 |
Note: Quantity represents Weight in kilograms
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