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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,506,532 | 63,478 | 19,494 |
| 2006 | $1,822,678 | 75,438 | 22,739 |
| 2007 | $2,252,662 | 66,607 | 30,984 |
| 2008 | $2,503,019 | 91,260 | 43,419 |
| 2009 | $1,050,202 | 29,992 | 14,227 |
| 2010 | $1,509,233 | 68,316 | 28,774 |
| 2011 | $1,555,457 | 52,694 | 27,397 |
Note: Quantity represents Number of pairs
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