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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,389,198 | 98,099 | 222,147 |
| 2006 | $1,985,205 | 163,202 | 317,455 |
| 2007 | $2,583,612 | 241,965 | 375,768 |
| 2008 | $3,169,080 | 177,976 | 388,698 |
| 2009 | $3,659,966 | 225,625 | 425,651 |
| 2010 | $3,698,313 | 250,522 | 393,479 |
| 2011 | $4,248,681 | 276,284 | 445,489 |
Note: Quantity represents Number of pairs
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