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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $600 | 576 | 576 |
| 2006 | $2,000 | 2,916 | 2,916 |
| 2007 | $5,600 | 4,462 | 4,462 |
| 2008 | $2,500 | 2,375 | 2,375 |
| 2009 | $19,100 | 15,773 | 15,773 |
| 2010 | $17,400 | 12,585 | 12,585 |
| 2011 | $31,900 | 20,767 | 20,767 |
Note: Quantity represents Weight in kilograms
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