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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,363,000 | 217,219 | 149,479 |
| 2006 | $428,000 | 104,199 | 46,939 |
| 2007 | $771,000 | 200,201 | 58,464 |
| 2008 | $1,933,000 | 158,782 | 116,505 |
| 2009 | $4,314,000 | 240,856 | 205,555 |
| 2010 | $1,323,000 | 133,000 | 64,582 |
| 2011 | $1,387,000 | 109,279 | 79,965 |
Note: Quantity represents Number of pairs
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