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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,628,508 | 69,012 | 383,495 |
| 2006 | $719,473 | 334,344 | 314,236 |
| 2007 | $1,176,476 | 564,421 | 470,483 |
| 2008 | $582,373 | 378,613 | 265,599 |
| 2009 | $1,014,064 | 378,262 | 148,226 |
| 2010 | $1,870,097 | 862,148 | 676,247 |
Note: Quantity represents Number of pairs
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