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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $626,604 | 79,823 | 432,439 |
| 2006 | $852,472 | 92,794 | 367,899 |
| 2007 | $982,694 | 151,148 | 419,231 |
| 2008 | $1,151,455 | 114,756 | 386,991 |
| 2009 | $851,947 | 89,098 | 239,226 |
| 2010 | $1,124,904 | 121,291 | 305,992 |
| 2011 | $921,336 | 90,018 | 305,707 |
Note: Quantity represents Number of pairs
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