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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,308,999 | 102,307 | 605,116 |
| 2006 | $1,347,663 | 105,329 | 513,837 |
| 2007 | $552,853 | 43,476 | 329,775 |
| 2008 | $1,029,631 | 75,886 | 745,656 |
| 2009 | $709,606 | 41,352 | 400,158 |
| 2010 | $978,069 | 60,896 | 502,425 |
| 2011 | $2,414,706 | 138,457 | 619,636 |
Note: Quantity represents Number of pairs
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