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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $5,790,058 | 363,926 | 2,039,966 |
| 2006 | $5,476,280 | 344,203 | 650,047 |
| 2007 | $6,391,188 | 380,209 | 411,671 |
| 2008 | $6,618,824 | 320,177 | 563,617 |
| 2009 | $5,294,540 | 218,183 | 584,625 |
| 2010 | $11,081,709 | 484,282 | 1,139,485 |
| 2011 | $18,294,896 | 925,154 | 1,602,883 |
Note: Quantity represents Number of pairs
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