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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $679,147 | 22,069 | 22,720 |
| 2006 | $815,304 | 26,473 | 34,127 |
| 2007 | $1,022,228 | 29,681 | 36,453 |
| 2008 | $389,266 | 9,837 | 12,786 |
| 2009 | $391,338 | 8,086 | 12,425 |
| 2010 | $348,633 | 7,544 | 7,018 |
| 2011 | $615,512 | 13,545 | 12,148 |
Note: Quantity represents Number of pairs
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