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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $443,708 | 142,165 | 16,815 |
| 2006 | $418,646 | 124,003 | 15,865 |
| 2007 | $691,330 | 165,523 | 121,742 |
| 2008 | $1,190,124 | 344,817 | 245,173 |
| 2009 | $1,895,278 | 343,229 | 210,751 |
| 2010 | $4,550,823 | 534,163 | 400,213 |
| 2011 | $5,843,806 | 675,665 | 599,925 |
Note: Quantity represents Number of pairs
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