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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $942,637 | 110,220 | 50,347 |
| 2006 | $1,430,896 | 108,947 | 76,426 |
| 2007 | $1,550,584 | 200,913 | 85,267 |
| 2008 | $1,128,671 | 99,246 | 58,153 |
| 2009 | $963,555 | 83,050 | 39,879 |
| 2010 | $736,906 | 78,512 | 32,985 |
Note: Quantity represents Number of pairs
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