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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,581,431 | 121,259 | 143,206 |
| 2006 | $6,111,995 | 247,837 | 339,065 |
| 2007 | $18,922,453 | 600,413 | 606,009 |
| 2008 | $11,268,793 | 338,707 | 267,825 |
| 2009 | $4,533,698 | 149,268 | 97,364 |
| 2010 | $3,629,517 | 89,938 | 79,153 |
| 2011 | $5,256,296 | 123,406 | 130,116 |
Note: Quantity represents Number of pairs
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