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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $124,637 | 8,787 | 7,512 |
| 2006 | $48,696 | 9,503 | 13,092 |
| 2007 | $44,427 | 4,694 | 5,411 |
| 2008 | $140,290 | 17,561 | 11,891 |
| 2009 | $323,060 | 41,765 | 32,393 |
| 2010 | $418,852 | 32,871 | 43,865 |
| 2011 | $305,349 | 55,290 | 128,439 |
Note: Quantity represents Number of pairs
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