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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $40,160 | 52,916 | 52,916 |
| 2006 | $27,921 | 35,580 | 35,580 |
| 2007 | $26,341 | 23,632 | 23,632 |
| 2008 | $54,267 | 9,658 | 9,658 |
| 2009 | $119,035 | 42,964 | 42,964 |
| 2010 | $247,972 | 88,597 | 88,597 |
| 2011 | $183,099 | 300,541 | 300,541 |
Note: Quantity represents Weight in kilograms
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