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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,101,433 | 308,895 | 944,014 |
| 2006 | $2,523,453 | 755,790 | 2,710,098 |
| 2007 | $3,987,396 | 779,318 | 3,177,951 |
| 2008 | $5,394,197 | 824,626 | 3,792,316 |
| 2009 | $4,779,975 | 635,916 | 3,417,464 |
| 2010 | $4,919,286 | 687,002 | 992,381 |
| 2011 | $5,766,618 | 667,529 | 3,979,349 |
Note: Quantity represents Number of pairs
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