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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $6,994,058 | 595,486 | 484,915 |
| 2006 | $8,045,550 | 691,055 | 573,586 |
| 2007 | $11,437,253 | 1,042,411 | 816,288 |
| 2008 | $13,626,836 | 1,272,909 | 835,817 |
| 2009 | $12,928,818 | 1,210,127 | 534,388 |
| 2010 | $17,838,263 | 1,701,577 | 1,446,448 |
| 2011 | $16,724,936 | 1,815,313 | 815,945 |
Note: Quantity represents Number of pairs
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