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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $136,526 | 16,870 | 30,380 |
| 2006 | $104,528 | 20,544 | 0 |
| 2007 | $103,955 | 5,335 | 25,212 |
| 2008 | $119,660 | 33,749 | 7,136 |
| 2009 | $5,697 | 200 | 368 |
| 2010 | $82,211 | 30,954 | 4,818 |
| 2011 | $22,894 | 6,254 | 1,482 |
Note: Quantity represents Number of pairs
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