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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $260,512 | 17,661 | 13,815 |
| 2006 | $436,495 | 29,591 | 23,148 |
| 2007 | $508,748 | 38,424 | 17,333 |
| 2008 | $439,927 | 32,575 | 16,632 |
| 2009 | $638,013 | 39,571 | 21,551 |
| 2010 | $938,846 | 65,117 | 33,690 |
| 2011 | $681,427 | 50,204 | 26,303 |
Note: Quantity represents Number of pairs
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