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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,000,469 | 139,399 | 211,033 |
| 2006 | $1,162,318 | 128,759 | 167,083 |
| 2007 | $1,667,802 | 51,662 | 76,213 |
| 2008 | $3,203,679 | 100,418 | 136,133 |
| 2009 | $4,278,437 | 190,398 | 276,582 |
| 2010 | $3,215,596 | 106,777 | 155,355 |
| 2011 | $7,083,493 | 364,160 | 571,178 |
Note: Quantity represents Number of pairs
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