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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $106 | 108 | 108 |
| 2006 | $5,354 | 10,041 | 10,041 |
| 2007 | $31,921 | 14,257 | 14,257 |
| 2008 | $51,592 | 129,372 | 129,372 |
| 2009 | $13,763 | 23,607 | 23,607 |
| 2010 | $19,649 | 26,069 | 26,069 |
| 2011 | $63,579 | 69,319 | 69,319 |
Note: Quantity represents Weight in kilograms
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