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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $166,660 | 49,780 | 27,772 |
| 2006 | $295,101 | 64,305 | 49,174 |
| 2007 | $247,961 | 64,805 | 31,605 |
| 2008 | $328,730 | 82,648 | 0 |
| 2009 | $433,285 | 126,389 | 25,739 |
| 2010 | $654,323 | 182,949 | 37,926 |
| 2011 | $621,176 | 162,862 | 36,042 |
Note: Quantity represents Number of pairs
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