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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $187,767 | 14,285 | 79,596 |
| 2006 | $379,430 | 19,938 | 54,680 |
| 2007 | $521,178 | 19,334 | 73,167 |
| 2008 | $740,633 | 28,529 | 163,479 |
| 2009 | $392,074 | 9,784 | 46,448 |
| 2010 | $530,578 | 15,736 | 54,471 |
| 2011 | $876,400 | 21,689 | 70,932 |
Note: Quantity represents Number of pairs
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