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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $73,888 | 97,750 | 290,034 |
| 2006 | $123,394 | 162,029 | 549,029 |
| 2007 | $165,982 | 302,535 | 873,287 |
| 2008 | $94,277 | 104,234 | 11,566 |
| 2009 | $52,787 | 64,882 | 4,918 |
| 2010 | $51,364 | 25,291 | 17,511 |
| 2011 | $144,102 | 101,836 | 197,210 |
Note: Quantity represents Number of pairs
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