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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,006,529 | 32,979 | 28,934 |
| 2006 | $2,016,389 | 46,590 | 44,410 |
| 2007 | $1,717,859 | 57,636 | 61,260 |
| 2008 | $2,116,110 | 64,646 | 60,644 |
| 2009 | $2,084,819 | 45,696 | 43,810 |
| 2010 | $2,559,755 | 52,625 | 52,037 |
| 2011 | $2,876,602 | 55,836 | 57,179 |
Note: Quantity represents Number of pairs
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