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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,186,605 | 42,698 | 219,596 |
| 2006 | $1,877,952 | 39,571 | 44,790 |
| 2007 | $2,638,792 | 46,470 | 56,185 |
| 2008 | $2,559,846 | 42,791 | 56,676 |
| 2009 | $2,460,319 | 40,595 | 49,910 |
| 2010 | $1,652,928 | 27,500 | 31,419 |
Note: Quantity represents Number of pairs
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