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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $387,221 | 24,423 | 38,674 |
| 2006 | $861,230 | 52,149 | 86,015 |
| 2007 | $1,206,524 | 81,591 | 93,678 |
| 2008 | $1,304,791 | 56,246 | 95,098 |
| 2009 | $425,386 | 20,354 | 28,465 |
| 2010 | $173,970 | 17,625 | 10,605 |
| 2011 | $369,037 | 16,777 | 22,644 |
Note: Quantity represents Number of pairs
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