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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $287,244 | 16,918 | 13,610 |
| 2006 | $190,074 | 10,529 | 8,222 |
| 2007 | $248,105 | 12,052 | 9,942 |
| 2008 | $366,462 | 19,329 | 15,292 |
| 2009 | $554,998 | 35,129 | 21,103 |
| 2010 | $752,281 | 45,523 | 35,727 |
| 2011 | $1,018,693 | 71,319 | 54,710 |
Note: Quantity represents Number of pairs
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