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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $113,654 | 94,351 | 7,698 |
| 2006 | $108,317 | 22,513 | 7,337 |
| 2007 | $77,374 | 34,856 | 23,959 |
| 2008 | $66,508 | 19,617 | 22,245 |
| 2009 | $136,393 | 24,550 | 20,551 |
| 2010 | $53,601 | 24,178 | 14,689 |
| 2011 | $508,375 | 99,880 | 74,810 |
Note: Quantity represents Number of pairs
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