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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,673,161 | 67,714 | 68,561 |
| 2006 | $2,043,129 | 75,338 | 84,753 |
| 2007 | $2,424,656 | 77,993 | 89,617 |
| 2008 | $2,350,346 | 64,563 | 81,300 |
| 2009 | $1,488,769 | 57,014 | 65,937 |
| 2010 | $859,907 | 25,209 | 27,947 |
| 2011 | $862,116 | 21,949 | 22,767 |
Note: Quantity represents Number of pairs
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