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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,107,336 | 843,662 | 112,555 |
| 2006 | $2,209,203 | 386,515 | 117,996 |
| 2007 | $2,699,729 | 356,758 | 350,594 |
| 2008 | $3,130,690 | 304,324 | 322,354 |
| 2009 | $3,106,590 | 293,259 | 356,794 |
| 2010 | $2,717,863 | 930,586 | 213,939 |
Note: Quantity represents Number of pairs
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