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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $662,851 | 64,631 | 98,396 |
| 2006 | $2,038,121 | 194,734 | 250,240 |
| 2007 | $2,138,244 | 188,962 | 262,879 |
| 2008 | $1,995,175 | 180,645 | 239,175 |
| 2009 | $489,823 | 30,583 | 57,027 |
| 2010 | $161,255 | 8,158 | 11,631 |
| 2011 | $490,655 | 33,244 | 54,739 |
Note: Quantity represents Number of pairs
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