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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,475,664 | 827,879 | 498,719 |
| 2006 | $5,298,203 | 676,308 | 471,801 |
| 2007 | $7,813,477 | 463,380 | 471,976 |
| 2008 | $9,480,191 | 532,105 | 559,236 |
| 2009 | $4,888,527 | 209,650 | 278,054 |
| 2010 | $7,976,850 | 686,991 | 708,239 |
| 2011 | $33,091,583 | 1,053,285 | 1,124,172 |
Note: Quantity represents Number of pairs
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