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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $339,482 | 17,462 | 32,718 |
| 2006 | $417,606 | 21,481 | 20,142 |
| 2007 | $223,824 | 148 | 16,972 |
| 2008 | $130,545 | 7,739 | 6,461 |
| 2009 | $159,752 | 8,368 | 9,536 |
| 2010 | $1,719,107 | 163,608 | 226,250 |
| 2011 | $4,734,299 | 275,546 | 472,463 |
Note: Quantity represents Number of pairs
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