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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,015,855 | 71,732 | 147,883 |
| 2006 | $1,600,596 | 105,853 | 173,332 |
| 2007 | $2,314,774 | 112,467 | 211,437 |
| 2008 | $4,449,162 | 169,452 | 313,503 |
| 2009 | $2,075,041 | 83,381 | 151,778 |
| 2010 | $2,613,815 | 83,782 | 153,200 |
| 2011 | $1,415,766 | 88,530 | 215,254 |
Note: Quantity represents Number of pairs
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