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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $110 | 25 | 25 |
| 2006 | $1,270 | 547 | 547 |
| 2007 | $13,411 | 12,638 | 12,638 |
| 2008 | $41,261 | 14,640 | 14,640 |
| 2009 | $50,940 | 42,423 | 42,423 |
| 2010 | $45,780 | 30,280 | 30,280 |
| 2011 | $60,881 | 22,008 | 22,008 |
Note: Quantity represents Weight in kilograms
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