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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $109,592 | 28,407 | 5,163 |
| 2006 | $217,401 | 19,763 | 10,241 |
| 2007 | $465,358 | 8,850 | 27,887 |
| 2008 | $240,799 | 8,009 | 8,925 |
| 2009 | $348,169 | 5,244 | 16,368 |
| 2010 | $781,624 | 28,802 | 24,930 |
| 2011 | $864,520 | 22,769 | 30,327 |
Note: Quantity represents Number of pairs
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