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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $138,118 | 53,229 | 45,434 |
| 2006 | $139,194 | 35,132 | 0 |
| 2007 | $241,216 | 63,793 | 60,226 |
| 2008 | $213,913 | 57,948 | 46,703 |
| 2009 | $188,208 | 61,393 | 35,188 |
| 2010 | $270,193 | 122,703 | 54,507 |
| 2011 | $188,965 | 90,650 | 39,075 |
Note: Quantity represents Number of pairs
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