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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $294,795 | 8,761 | 1,800 |
| 2006 | $400,715 | 7,999 | 2,416 |
| 2007 | $390,954 | 6,945 | 2,389 |
| 2008 | $701,841 | 8,959 | 2,369 |
| 2009 | $309,159 | 3,551 | 1,606 |
| 2010 | $429,431 | 5,243 | 1,406 |
| 2011 | $614,564 | 9,216 | 2,148 |
Note: Quantity represents Number of pairs
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