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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,092,721 | 921,184 | 471,582 |
| 2006 | $1,497,818 | 1,069,906 | 646,409 |
| 2007 | $1,585,635 | 999,304 | 676,453 |
| 2008 | $2,678,133 | 1,433,579 | 900,089 |
| 2009 | $2,065,553 | 1,152,796 | 580,006 |
| 2011 | $1,761,491 | 1,125,321 | 2,384,217 |
Note: Quantity represents Number of pairs
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