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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $190,777 | 8,776 | 39,637 |
| 2006 | $238,416 | 10,967 | 129,663 |
| 2007 | $115,608 | 0 | 19,928 |
| 2008 | $424,247 | 0 | 69,467 |
| 2009 | $611,944 | 0 | 37,309 |
| 2010 | $453,931 | 11,135 | 11,975 |
| 2011 | $167,110 | 0 | 0 |
Note: Quantity represents Number of pairs
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