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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $219,545 | 33,724 | 50,225 |
| 2006 | $587,732 | 108,021 | 87,312 |
| 2007 | $1,379,160 | 225,867 | 212,857 |
| 2008 | $818,851 | 88,632 | 85,370 |
| 2009 | $328,374 | 19,708 | 17,623 |
| 2010 | $606,886 | 34,752 | 41,609 |
| 2011 | $984,549 | 71,414 | 76,896 |
Note: Quantity represents Number of pairs
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