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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $265,003 | 41,825 | 47,823 |
| 2006 | $541,552 | 65,688 | 109,391 |
| 2007 | $502,438 | 0 | 129,146 |
| 2008 | $338,135 | 37,976 | 45,293 |
| 2009 | $461,603 | 46,324 | 103,693 |
| 2010 | $485,873 | 49,470 | 95,092 |
| 2011 | $628,901 | 80,860 | 195,963 |
Note: Quantity represents Number of pairs
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