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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $101,113 | 5,961 | 4,595 |
| 2006 | $302,240 | 24,110 | 13,734 |
| 2007 | $250,730 | 29,107 | 29,514 |
| 2008 | $104,583 | 20,258 | 45,164 |
| 2009 | $233,296 | 27,419 | 28,848 |
| 2010 | $241,491 | 13,474 | 23,813 |
| 2011 | $255,996 | 105,345 | 86,362 |
Note: Quantity represents Number of pairs
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