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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $126,511 | 66,904 | 28,024 |
| 2006 | $171,403 | 62,464 | 37,968 |
| 2007 | $135,429 | 31,219 | 17,853 |
| 2008 | $231,872 | 96,479 | 28,446 |
| 2009 | $256,130 | 89,364 | 23,862 |
| 2010 | $149,162 | 56,925 | 14,105 |
| 2011 | $136,414 | 51,422 | 17,262 |
Note: Quantity represents Number of pairs
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