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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $74,217 | 5,630 | 7,260 |
| 2006 | $87,256 | 5,800 | 8,634 |
| 2007 | $79,368 | 3,393 | 5,263 |
| 2008 | $114,613 | 6,714 | 5,402 |
| 2009 | $136,194 | 18,754 | 9,528 |
| 2010 | $84,893 | 4,467 | 9,885 |
| 2011 | $144,828 | 4,955 | 4,248 |
Note: Quantity represents Number of pairs
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