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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $34,143 | 13,242 | 20,537 |
| 2006 | $67,371 | 35,598 | 18,721 |
| 2007 | $5,797 | 1,238 | 6,382 |
| 2008 | $30,884 | 9,540 | 3,352 |
| 2009 | $19,776 | 4,612 | 1,956 |
| 2010 | $15,158 | 1,221 | 1,448 |
| 2011 | $17,995 | 2,956 | 1,821 |
Note: Quantity represents Number of pairs
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