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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $85,430 | 6,677 | 12,736 |
| 2006 | $58,714 | 4,589 | 6,207 |
| 2007 | $80,722 | 6,348 | 10,625 |
| 2008 | $54,682 | 4,030 | 7,309 |
| 2009 | $36,901 | 2,150 | 5,538 |
| 2010 | $21,945 | 1,366 | 3,129 |
| 2011 | $117,132 | 6,716 | 12,898 |
Note: Quantity represents Number of pairs
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