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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $577,612 | 197,370 | 197,188 |
| 2006 | $420,750 | 44,667 | 180,031 |
| 2007 | $428,628 | 89,181 | 132,135 |
| 2008 | $677,902 | 86,162 | 117,465 |
| 2009 | $383,571 | 26,027 | 53,381 |
| 2010 | $1,111,199 | 67,460 | 170,265 |
| 2011 | $2,022,859 | 88,661 | 279,565 |
Note: Quantity represents Number of pairs
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