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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $133,044 | 152,389 | 148,802 |
| 2006 | $218,028 | 357,799 | 343,368 |
| 2007 | $396,375 | 773,851 | 1,027,947 |
| 2008 | $378,255 | 732,434 | 21,619 |
| 2009 | $304,662 | 766,192 | 0 |
| 2010 | $373,388 | 366,750 | 478,599 |
| 2011 | $420,837 | 432,104 | 595,581 |
Note: Quantity represents Number of pairs
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