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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $841,956 | 43,941 | 85,715 |
| 2006 | $937,194 | 48,911 | 92,008 |
| 2007 | $914,217 | 51,711 | 63,080 |
| 2008 | $1,395,267 | 60,384 | 143,527 |
| 2009 | $1,331,657 | 51,951 | 185,695 |
| 2010 | $784,847 | 36,105 | 91,773 |
| 2011 | $383,181 | 16,460 | 175,327 |
Note: Quantity represents Number of pairs
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