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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $992,529 | 780,878 | 1,009,112 |
| 2006 | $609,403 | 762,931 | 1,200,420 |
| 2007 | $639,218 | 701,871 | 1,101,960 |
| 2008 | $584,097 | 726,624 | 55,725 |
| 2009 | $661,979 | 560,929 | 55,228 |
| 2010 | $1,002,999 | 1,560,086 | 2,841,894 |
| 2011 | $1,128,206 | 1,668,970 | 3,541,928 |
Note: Quantity represents Number of pairs
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