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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $529,450 | 43,231 | 912,201 |
| 2006 | $513,216 | 41,906 | 667,905 |
| 2007 | $217,094 | 0 | 64,041 |
| 2008 | $102,380 | 0 | 124,125 |
| 2009 | $18,760 | 753 | 6,499 |
| 2010 | $40,400 | 1,914 | 17,870 |
| 2011 | $50,095 | 2,503 | 23,069 |
Note: Quantity represents Number of pairs
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