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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $978,995 | 51,883 | 80,013 |
| 2006 | $3,062,390 | 172,700 | 247,151 |
| 2007 | $3,664,958 | 47,700 | 245,653 |
| 2008 | $3,930,617 | 213,036 | 224,144 |
| 2009 | $2,746,677 | 205,112 | 184,527 |
| 2010 | $4,993,833 | 481,494 | 511,766 |
| 2011 | $7,637,695 | 1,435,367 | 440,338 |
Note: Quantity represents Number of pairs
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