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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,946,580 | 52,491 | 51,406 |
| 2006 | $7,828,643 | 79,300 | 78,421 |
| 2007 | $8,972,863 | 85,277 | 88,103 |
| 2008 | $14,762,727 | 178,373 | 170,740 |
| 2009 | $9,816,661 | 192,395 | 155,336 |
| 2010 | $13,892,004 | 292,658 | 226,147 |
| 2011 | $11,805,465 | 210,688 | 155,800 |
Note: Quantity represents Number of pairs
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