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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,075,633 | 261,060 | 261,177 |
| 2006 | $3,020,073 | 270,048 | 281,431 |
| 2007 | $3,000,036 | 234,671 | 241,229 |
| 2008 | $4,048,480 | 259,911 | 291,986 |
| 2009 | $8,197,367 | 582,728 | 659,105 |
| 2010 | $9,130,277 | 699,086 | 864,848 |
| 2011 | $12,267,100 | 956,869 | 1,075,284 |
Note: Quantity represents Number of pairs
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