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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $13,177,283 | 427,872 | 527,036 |
| 2006 | $19,396,148 | 629,801 | 988,442 |
| 2007 | $18,708,662 | 543,221 | 591,931 |
| 2008 | $24,185,033 | 603,880 | 952,094 |
| 2009 | $27,832,028 | 575,078 | 473,111 |
| 2010 | $31,599,462 | 683,766 | 451,548 |
| 2011 | $51,766,368 | 1,139,139 | 823,999 |
Note: Quantity represents Number of pairs
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