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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $139,257 | 29,112 | 12,786 |
| 2006 | $233,758 | 57,129 | 22,589 |
| 2007 | $272,943 | 61,264 | 25,649 |
| 2008 | $359,677 | 68,874 | 18,045 |
| 2009 | $212,442 | 52,775 | 8,781 |
| 2010 | $217,400 | 48,999 | 22,050 |
| 2011 | $467,115 | 95,376 | 44,564 |
Note: Quantity represents Number of pairs
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