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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $72,474 | 26,895 | 26,895 |
| 2006 | $63,951 | 17,584 | 17,584 |
| 2007 | $29,706 | 9,046 | 9,046 |
| 2008 | $161,943 | 106,959 | 106,959 |
| 2009 | $292,219 | 196,730 | 196,730 |
| 2010 | $653,253 | 319,597 | 319,597 |
| 2011 | $1,210,284 | 507,071 | 507,071 |
Note: Quantity represents Weight in kilograms
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