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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $10,657,806 | 322,303 | 521,822 |
| 2006 | $12,456,818 | 376,707 | 463,647 |
| 2007 | $10,314,493 | 515,020 | 376,846 |
| 2008 | $17,156,140 | 599,495 | 639,419 |
| 2009 | $15,191,568 | 370,324 | 553,902 |
| 2010 | $19,603,556 | 497,759 | 656,469 |
| 2011 | $23,945,123 | 619,021 | 778,972 |
Note: Quantity represents Number of pairs
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