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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $592,876 | 372,003 | 165,049 |
| 2006 | $933,153 | 327,980 | 155,805 |
| 2007 | $1,336,910 | 627,977 | 284,398 |
| 2008 | $3,148,180 | 710,913 | 304,330 |
| 2009 | $2,479,073 | 412,685 | 162,132 |
| 2010 | $3,860,188 | 914,099 | 394,605 |
| 2011 | $2,335,740 | 390,746 | 171,237 |
Note: Quantity represents Number of pairs
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