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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $380,071 | 15,380 | 18,486 |
| 2006 | $319,791 | 13,542 | 19,943 |
| 2007 | $577,671 | 30,163 | 52,293 |
| 2008 | $856,730 | 15,352 | 24,187 |
| 2009 | $4,433 | 122 | 203 |
| 2010 | $675 | 56 | 406 |
| 2011 | $57,671 | 1,710 | 3,273 |
Note: Quantity represents Number of pairs
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