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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $448,614 | 181,544 | 36,220 |
| 2006 | $633,843 | 241,042 | 51,175 |
| 2007 | $563,913 | 174,533 | 64,178 |
| 2008 | $724,184 | 181,982 | 80,230 |
| 2009 | $183,595 | 60,308 | 17,320 |
| 2010 | $289,877 | 74,398 | 20,674 |
| 2011 | $562,537 | 133,212 | 94,565 |
Note: Quantity represents Number of pairs
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