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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $142,546 | 40,597 | 27,506 |
| 2006 | $122,790 | 16,415 | 31,617 |
| 2007 | $152,235 | 24,057 | 29,251 |
| 2008 | $90,448 | 6,346 | 3,564 |
| 2009 | $95,959 | 10,418 | 7,233 |
| 2010 | $74,200 | 8,910 | 5,785 |
| 2011 | $140,240 | 12,214 | 30,416 |
Note: Quantity represents Number of pairs
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