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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $682,303 | 232,020 | 262,630 |
| 2006 | $1,205,166 | 451,907 | 506,885 |
| 2007 | $1,880,302 | 430,316 | 504,781 |
| 2008 | $2,536,672 | 476,542 | 624,214 |
| 2009 | $1,221,342 | 264,958 | 352,709 |
| 2011 | $896,607 | 113,219 | 124,447 |
Note: Quantity represents Number of pairs
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