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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,944,585 | 209,830 | 231,301 |
| 2006 | $1,876,447 | 243,508 | 210,713 |
| 2007 | $1,532,697 | 198,176 | 168,646 |
| 2008 | $1,871,103 | 225,191 | 203,481 |
| 2009 | $2,131,050 | 235,054 | 207,191 |
| 2010 | $2,600,467 | 292,224 | 274,571 |
| 2011 | $2,661,770 | 283,725 | 260,279 |
Note: Quantity represents Number of pairs
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