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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $979 | 54 | 54 |
| 2006 | $13,361 | 734 | 734 |
| 2007 | $26,864 | 47,000 | 47,000 |
| 2008 | $26,460 | 41,070 | 41,070 |
| 2009 | $49,174 | 82,126 | 82,126 |
| 2010 | $76,686 | 186,243 | 186,243 |
| 2011 | $112,991 | 372,548 | 372,548 |
Note: Quantity represents Weight in kilograms
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