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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $112,287 | 12,390 | 70,124 |
| 2006 | $170,032 | 15,427 | 77,226 |
| 2007 | $624,233 | 59,931 | 138,819 |
| 2008 | $12,632 | 820 | 1,154 |
| 2009 | $31,313 | 1,752 | 25,765 |
| 2010 | $69,094 | 5,099 | 3,430 |
| 2011 | $152,829 | 15,388 | 7,854 |
Note: Quantity represents Number of pairs
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