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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $145,372 | 53,785 | 9,847 |
| 2006 | $250,307 | 88,518 | 16,954 |
| 2007 | $255,992 | 77,652 | 11,978 |
| 2008 | $1,325,695 | 123,413 | 66,511 |
| 2009 | $909,819 | 207,541 | 37,606 |
| 2010 | $761,845 | 157,967 | 28,893 |
| 2011 | $573,480 | 156,208 | 27,978 |
Note: Quantity represents Number of pairs
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