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| Year | Trade Value | Weight (kg) | Quantity |
| 2006 | $321,719 | 17,775 | 36,737 |
| 2007 | $1,230,280 | 66,714 | 161,151 |
| 2008 | $2,120,622 | 114,818 | 200,195 |
| 2009 | $1,651,941 | 85,822 | 152,227 |
| 2010 | $603,456 | 59,869 | 97,249 |
| 2011 | $1,038,118 | 71,358 | 169,282 |
Note: Quantity represents Number of pairs
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