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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $18,165 | 1,533 | 922 |
| 2006 | $95,752 | 5,030 | 12,780 |
| 2007 | $79,395 | 3,594 | 8,563 |
| 2008 | $281,455 | 12,427 | 22,094 |
| 2009 | $99,337 | 5,417 | 7,476 |
| 2010 | $61,048 | 2,004 | 4,444 |
| 2011 | $869,276 | 42,466 | 35,669 |
Note: Quantity represents Number of pairs
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