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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,027,356 | 15,890 | 23,191 |
| 2006 | $2,070,661 | 40,494 | 48,326 |
| 2007 | $3,196,219 | 82,446 | 112,595 |
| 2008 | $2,614,795 | 90,706 | 104,143 |
| 2009 | $1,254,458 | 28,318 | 31,784 |
| 2010 | $1,228,149 | 25,029 | 27,436 |
| 2011 | $2,175,801 | 30,867 | 40,721 |
Note: Quantity represents Number of pairs
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