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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $702,782 | 144,606 | 105,501 |
| 2006 | $411,960 | 68,197 | 61,843 |
| 2007 | $1,712,115 | 169,795 | 188,646 |
| 2008 | $1,301,653 | 297,223 | 124,182 |
| 2009 | $548,755 | 147,442 | 319,241 |
| 2010 | $717,151 | 110,055 | 330,903 |
Note: Quantity represents Number of pairs
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