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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $162,189 | 18,938 | 9,349 |
| 2006 | $114,258 | 8,082 | 6,586 |
| 2007 | $36,486 | 4,372 | 862 |
| 2008 | $60,128 | 5,802 | 1,002 |
| 2009 | $19,752 | 752 | 271 |
| 2010 | $17,538 | 1,513 | 250 |
| 2011 | $113,661 | 9,102 | 1,740 |
Note: Quantity represents Number of pairs
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