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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $92,362 | 3,428 | 3,813 |
| 2006 | $155,985 | 7,243 | 10,350 |
| 2007 | $383,012 | 115 | 55,711 |
| 2008 | $133,042 | 0 | 15,406 |
| 2009 | $104,874 | 0 | 2,433 |
| 2010 | $725,594 | 9,197 | 26,875 |
| 2011 | $194,236 | 3,412 | 5,027 |
Note: Quantity represents Number of pairs
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