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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $117,099 | 14,003 | 21,564 |
| 2006 | $131,913 | 10,048 | 20,974 |
| 2007 | $262,282 | 27,181 | 33,155 |
| 2008 | $819,693 | 65,885 | 55,394 |
| 2009 | $522,172 | 50,491 | 45,668 |
| 2010 | $1,081,293 | 194,732 | 90,414 |
| 2011 | $913,228 | 113,885 | 94,953 |
Note: Quantity represents Number of pairs
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