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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,446,881 | 73,860 | 223,911 |
| 2006 | $3,161,745 | 95,438 | 280,313 |
| 2007 | $2,926,955 | 76,932 | 261,522 |
| 2008 | $2,649,875 | 65,914 | 236,166 |
| 2009 | $2,099,625 | 41,916 | 188,152 |
| 2010 | $2,472,207 | 47,000 | 213,120 |
| 2011 | $3,916,780 | 75,661 | 337,017 |
Note: Quantity represents Number of pairs
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