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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $944,007 | 30,652 | 31,436 |
| 2006 | $1,654,415 | 53,720 | 56,764 |
| 2007 | $1,868,266 | 54,247 | 80,064 |
| 2008 | $1,981,173 | 49,468 | 71,456 |
| 2009 | $1,083,007 | 22,378 | 53,819 |
| 2010 | $1,170,779 | 25,334 | 24,085 |
| 2011 | $2,710,328 | 59,642 | 232,172 |
Note: Quantity represents Number of pairs
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