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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $538,832 | 473,267 | 86,165 |
| 2006 | $293,800 | 232,449 | 46,982 |
| 2007 | $304,966 | 258,389 | 44,355 |
| 2008 | $358,586 | 277,643 | 43,982 |
| 2009 | $286,448 | 232,898 | 33,314 |
| 2010 | $339,922 | 258,510 | 36,166 |
| 2011 | $329,534 | 205,862 | 34,553 |
Note: Quantity represents Number of pairs
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