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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $33,142,087 | 1,094,005 | 1,438,152 |
| 2006 | $27,057,896 | 796,882 | 912,523 |
| 2007 | $30,768,068 | 810,865 | 930,880 |
| 2008 | $18,068,573 | 304,782 | 363,919 |
| 2009 | $18,827,422 | 419,290 | 464,204 |
| 2010 | $22,459,679 | 554,640 | 600,543 |
| 2011 | $23,163,430 | 475,127 | 522,749 |
Note: Quantity represents Number of pairs
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