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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $897,000 | 193,694 | 387,115 |
| 2006 | $2,779,508 | 610,647 | 1,199,544 |
| 2007 | $5,663,640 | 1,295,601 | 2,416,187 |
| 2008 | $4,589,463 | 1,060,764 | 1,542,465 |
| 2009 | $3,661,436 | 877,625 | 1,028,129 |
| 2010 | $2,777,341 | 675,043 | 755,482 |
| 2011 | $5,643,791 | 1,392,739 | 1,872,659 |
Note: Quantity represents Number of pairs
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