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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $423,800 | 31,951 | 16,043 |
| 2006 | $1,269,700 | 92,546 | 45,088 |
| 2007 | $1,133,400 | 104,199 | 47,596 |
| 2008 | $1,805,100 | 144,024 | 69,144 |
| 2009 | $1,617,100 | 155,318 | 72,687 |
| 2010 | $2,530,700 | 275,873 | 127,240 |
| 2011 | $2,769,100 | 276,020 | 130,851 |
Note: Quantity represents Number of pairs
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