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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,673,290 | 405,306 | 257,232 |
| 2006 | $4,204,921 | 381,506 | 253,096 |
| 2007 | $4,923,219 | 472,667 | 225,148 |
| 2008 | $5,620,197 | 364,985 | 238,229 |
| 2009 | $4,604,247 | 257,644 | 297,518 |
| 2010 | $5,021,177 | 370,541 | 317,790 |
| 2011 | $6,004,866 | 604,636 | 581,187 |
Note: Quantity represents Number of pairs
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