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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $217,649 | 22,841 | 36,268 |
| 2006 | $409,462 | 12,847 | 68,231 |
| 2007 | $463,418 | 15,731 | 59,067 |
| 2008 | $193,662 | 5,111 | 0 |
| 2009 | $41,946 | 1,643 | 2,492 |
| 2010 | $111,715 | 12,142 | 6,475 |
| 2011 | $211,482 | 7,240 | 19,112 |
Note: Quantity represents Number of pairs
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