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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,464,606 | 108,031 | 26,560 |
| 2006 | $2,214,230 | 119,991 | 33,172 |
| 2007 | $1,536,544 | 70,181 | 25,879 |
| 2008 | $1,984,577 | 89,631 | 31,571 |
| 2009 | $990,859 | 54,726 | 12,329 |
| 2010 | $1,487,119 | 52,728 | 12,209 |
| 2011 | $1,105,105 | 39,739 | 10,496 |
Note: Quantity represents Number of pairs
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