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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,039,878 | 1,678,657 | 3,288,838 |
| 2006 | $1,763,336 | 325,926 | 1,477,710 |
| 2007 | $6,545,553 | 869,131 | 3,138,211 |
| 2008 | $5,814,920 | 645,830 | 2,977,149 |
| 2009 | $5,315,922 | 553,518 | 2,234,103 |
| 2010 | $5,730,909 | 638,767 | 2,439,609 |
| 2011 | $8,056,344 | 770,858 | 3,265,452 |
Note: Quantity represents Number of pairs
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