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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $179,731 | 48,940 | 28,911 |
| 2006 | $374,713 | 69,097 | 60,276 |
| 2007 | $612,461 | 94,453 | 86,064 |
| 2008 | $899,653 | 141,541 | 0 |
| 2009 | $694,419 | 113,000 | 77,718 |
| 2010 | $967,806 | 161,978 | 0 |
| 2011 | $524,053 | 71,525 | 0 |
Note: Quantity represents Number of pairs
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