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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $20 | 14 | 14 |
| 2006 | $455 | 1,738 | 1,738 |
| 2007 | $169,720 | 1,023,702 | 1,023,702 |
| 2008 | $22,657 | 3,150,575 | 3,150,575 |
| 2009 | $551,153 | 16,754,610 | 16,754,610 |
| 2010 | $630 | 4,149 | 4,149 |
| 2011 | $366 | 924 | 924 |
Note: Quantity represents Weight in kilograms
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