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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $516,193 | 54,896 | 39,362 |
| 2006 | $258,835 | 32,621 | 19,737 |
| 2007 | $288,398 | 30,378 | 19,851 |
| 2008 | $600,632 | 67,311 | 30,334 |
| 2009 | $645,691 | 72,866 | 28,841 |
| 2010 | $558,656 | 57,913 | 25,171 |
| 2011 | $330,371 | 33,340 | 15,828 |
Note: Quantity represents Number of pairs
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