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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $50,928 | 4,374 | 188,500 |
| 2006 | $58,244 | 5,003 | 26,002 |
| 2007 | $78,613 | 7,165 | 45,917 |
| 2008 | $476,082 | 44,472 | 40,679 |
| 2009 | $792,592 | 74,186 | 43,083 |
| 2010 | $868,406 | 82,837 | 40,243 |
| 2011 | $341,748 | 37,093 | 16,673 |
Note: Quantity represents Number of pairs
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