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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,756 | 2,629 | 2,629 |
| 2006 | $32,616 | 26,155 | 26,155 |
| 2007 | $26,671 | 52,272 | 52,272 |
| 2008 | $18,562 | 21,226 | 21,226 |
| 2009 | $82,140 | 58,596 | 58,596 |
| 2010 | $299,212 | 208,360 | 208,360 |
| 2011 | $85,381 | 66,155 | 66,155 |
Note: Quantity represents Weight in kilograms
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