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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $112,016 | 6,122 | 3,956 |
| 2006 | $216,484 | 7,878 | 6,662 |
| 2007 | $268 | 3 | 22 |
| 2008 | $919,487 | 64,070,795 | 28,091 |
| 2009 | $892,466 | 39,139 | 31,687 |
| 2010 | $1,352,625 | 10,148 | 52,060 |
| 2011 | $11,338 | 732 | 625 |
Note: Quantity represents Number of pairs
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