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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,793,395 | 26,573 | 191,786 |
| 2006 | $1,692,554 | 25,980 | 76,911 |
| 2007 | $1,409,239 | 24,821 | 48,302 |
| 2008 | $1,384,927 | 14,846 | 30,471 |
| 2009 | $2,944,631 | 30,720 | 47,360 |
| 2010 | $1,422,224 | 15,342 | 23,827 |
| 2011 | $1,022,887 | 11,574 | 27,039 |
Note: Quantity represents Number of pairs
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