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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $80,000 | 2,500 | 5,578 |
| 2006 | $66,343 | 1,247 | 4,626 |
| 2007 | $53,356 | 1,937 | 4,310 |
| 2008 | $416,503 | 52,089 | 22,276 |
| 2009 | $204,349 | 16,186 | 10,835 |
| 2010 | $13,409 | 3,048 | 604 |
| 2011 | $105,114 | 3,242 | 4,781 |
Note: Quantity represents Number of pairs
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