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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $513,978 | 46,893 | 25,308 |
| 2006 | $249,758 | 83,853 | 12,298 |
| 2007 | $336,029 | 49,814 | 15,457 |
| 2008 | $306,031 | 39,152 | 12,901 |
| 2009 | $604,962 | 45,139 | 21,930 |
| 2010 | $377,233 | 48,643 | 13,447 |
| 2011 | $261,962 | 30,103 | 9,301 |
Note: Quantity represents Number of pairs
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