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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,477,520 | 160,885 | 114,397 |
| 2006 | $1,755,077 | 87,519 | 107,605 |
| 2007 | $3,158,177 | 122,405 | 166,658 |
| 2008 | $3,995,429 | 130,846 | 191,575 |
| 2009 | $3,663,978 | 145,056 | 232,207 |
| 2010 | $3,808,117 | 268,774 | 348,232 |
| 2011 | $3,904,203 | 245,325 | 307,202 |
Note: Quantity represents Number of pairs
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