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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,155,127 | 63,720 | 46,362 |
| 2006 | $1,261,890 | 69,610 | 50,549 |
| 2007 | $1,262,389 | 61,406 | 58,490 |
| 2008 | $1,221,136 | 57,073 | 77,393 |
| 2009 | $1,109,490 | 44,791 | 69,433 |
| 2010 | $1,078,646 | 43,342 | 40,238 |
| 2011 | $1,156,330 | 47,471 | 48,399 |
Note: Quantity represents Number of pairs
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