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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,262,000 | 199,175 | 420,214 |
| 2006 | $5,048,445 | 464,493 | 650,346 |
| 2007 | $5,843,249 | 343,788 | 733,065 |
| 2008 | $7,690,360 | 521,373 | 842,738 |
| 2009 | $9,748,843 | 615,599 | 954,167 |
| 2010 | $11,281,069 | 462,601 | 1,008,941 |
| 2011 | $10,951,404 | 387,135 | 914,320 |
Note: Quantity represents Number of pairs
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