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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $136,100 | 22,100 | 5,906 |
| 2006 | $353,555 | 41,259 | 15,342 |
| 2007 | $462,617 | 58,232 | 15,993 |
| 2008 | $572,447 | 85,047 | 19,010 |
| 2009 | $494,095 | 41,373 | 13,439 |
| 2010 | $637,106 | 32,456 | 17,032 |
| 2011 | $838,295 | 64,569 | 22,606 |
Note: Quantity represents Number of pairs
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