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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $840,428 | 41,450 | 44,449 |
| 2006 | $1,172,823 | 97,250 | 93,806 |
| 2007 | $2,125,236 | 191,330 | 188,498 |
| 2008 | $3,050,010 | 152,973 | 163,579 |
| 2009 | $2,981,096 | 137,913 | 129,661 |
| 2011 | $3,470,880 | 97,065 | 95,527 |
Note: Quantity represents Number of pairs
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