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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $7,736,982 | 361,102 | 772,731 |
| 2006 | $6,688,025 | 309,976 | 412,884 |
| 2007 | $7,416,087 | 335,573 | 512,817 |
| 2008 | $8,538,432 | 381,989 | 483,608 |
| 2009 | $6,939,018 | 239,835 | 320,489 |
| 2010 | $8,861,246 | 219,066 | 279,609 |
| 2011 | $12,063,228 | 269,283 | 370,462 |
Note: Quantity represents Number of pairs
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