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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $265,804 | 65,534 | 65,924 |
| 2006 | $288,253 | 51,540 | 50,487 |
| 2007 | $321,370 | 50,393 | 35,437 |
| 2008 | $327,357 | 44,704 | 30,512 |
| 2009 | $266,515 | 41,751 | 26,451 |
| 2010 | $429,555 | 86,344 | 38,881 |
| 2011 | $715,540 | 110,476 | 61,615 |
Note: Quantity represents Number of pairs
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