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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $143,092 | 14,468 | 7,105 |
| 2006 | $277,536 | 38,020 | 18,435 |
| 2007 | $509,548 | 64,706 | 31,000 |
| 2008 | $534,165 | 64,039 | 32,337 |
| 2009 | $1,037,141 | 116,309 | 69,335 |
| 2010 | $769,250 | 102,136 | 48,873 |
| 2011 | $625,322 | 66,263 | 28,608 |
Note: Quantity represents Number of pairs
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