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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $222,948 | 24,660 | 11,445 |
| 2006 | $41,407 | 1,637 | 1,759 |
| 2007 | $761,700 | 82,301 | 63,082 |
| 2008 | $801,438 | 38,770 | 30,302 |
| 2009 | $546,950 | 19,972 | 20,483 |
| 2010 | $247,943 | 4,994 | 6,081 |
| 2011 | $404,230 | 4,064 | 4,829 |
Note: Quantity represents Number of pairs
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