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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $296,718 | 46,831 | 44,008 |
| 2006 | $331,318 | 40,187 | 67,116 |
| 2007 | $182,375 | 0 | 66,462 |
| 2008 | $2,623 | 295 | 408 |
| 2009 | $195,181 | 19,587 | 58,575 |
| 2010 | $9,869 | 1,005 | 26,473 |
| 2011 | $99,357 | 9,202 | 28,490 |
Note: Quantity represents Number of pairs
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