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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $224,821 | 38,933 | 57,629 |
| 2006 | $310,565 | 22,826 | 79,837 |
| 2007 | $259,895 | 36,565 | 25,226 |
| 2008 | $426,853 | 94,007 | 91,379 |
| 2009 | $468,724 | 70,781 | 44,179 |
| 2010 | $735,113 | 89,041 | 85,014 |
| 2011 | $731,367 | 97,896 | 92,549 |
Note: Quantity represents Number of pairs
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