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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $204,911 | 11,798 | 21,260 |
| 2006 | $76,581 | 6,192 | 25,941 |
| 2007 | $91,962 | 4,244 | 14,692 |
| 2008 | $126,188 | 32,469 | 25,164 |
| 2009 | $125,331 | 9,838 | 35,550 |
| 2010 | $169,465 | 17,254 | 55,151 |
| 2011 | $246,453 | 14,557 | 59,699 |
Note: Quantity represents Number of pairs
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