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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $198,481 | 9,669 | 13,216 |
| 2006 | $131,993 | 11,769 | 8,142 |
| 2007 | $239,506 | 17,966 | 7,076 |
| 2008 | $208,855 | 17,330 | 5,654 |
| 2009 | $281,163 | 9,556 | 5,676 |
| 2010 | $154,609 | 3,590 | 5,236 |
| 2011 | $197,706 | 4,907 | 8,404 |
Note: Quantity represents Number of pairs
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