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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,703,971 | 54,738 | 53,575 |
| 2006 | $1,907,696 | 67,204 | 70,718 |
| 2007 | $984,194 | 40,278 | 36,833 |
| 2008 | $506,015 | 21,823 | 20,822 |
| 2009 | $592,215 | 15,122 | 15,596 |
| 2010 | $3,007,160 | 108,537 | 121,589 |
| 2011 | $4,537,618 | 172,290 | 199,059 |
Note: Quantity represents Number of pairs
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