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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,825,449 | 648,123 | 547,455 |
| 2006 | $4,491,724 | 584,130 | 516,929 |
| 2007 | $5,638,718 | 646,103 | 584,623 |
| 2008 | $5,798,904 | 604,691 | 535,279 |
| 2009 | $7,133,826 | 694,527 | 615,612 |
| 2010 | $8,177,474 | 776,567 | 716,240 |
| 2011 | $10,486,239 | 931,006 | 857,615 |
Note: Quantity represents Number of pairs
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