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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $18,359,775 | 465,644 | 569,152 |
| 2006 | $22,753,641 | 511,621 | 738,474 |
| 2007 | $30,782,103 | 637,167 | 877,804 |
| 2008 | $29,573,168 | 593,118 | 835,102 |
| 2009 | $25,399,276 | 513,597 | 714,094 |
| 2010 | $24,813,586 | 473,152 | 668,687 |
| 2011 | $32,896,377 | 510,840 | 800,074 |
Note: Quantity represents Number of pairs
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