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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $6,292 | 8,960 | 8,960 |
| 2006 | $16,930 | 14,145 | 14,145 |
| 2007 | $9,808 | 7,675 | 7,675 |
| 2008 | $18,430 | 8,010 | 8,010 |
| 2009 | $22,858 | 10,635 | 10,635 |
| 2010 | $41,239 | 24,031 | 24,031 |
| 2011 | $161,480 | 88,108 | 88,108 |
Note: Quantity represents Weight in kilograms
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