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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $859,808 | 87,660 | 143,275 |
| 2006 | $5,034,907 | 334,536 | 838,996 |
| 2007 | $10,637,438 | 615,557 | 1,355,835 |
| 2008 | $13,264,100 | 616,123 | 738,972 |
| 2009 | $14,033,875 | 513,646 | 833,685 |
| 2010 | $12,066,726 | 427,121 | 699,413 |
Note: Quantity represents Number of pairs
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