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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,419,081 | 256,698 | 370,117 |
| 2006 | $1,936,693 | 413,636 | 442,851 |
| 2007 | $2,671,046 | 291,865 | 360,151 |
| 2008 | $3,354,521 | 550,420 | 450,978 |
| 2009 | $3,077,458 | 641,334 | 581,208 |
| 2010 | $9,554,896 | 2,017,429 | 1,658,453 |
| 2011 | $12,946,846 | 2,216,824 | 2,085,799 |
Note: Quantity represents Number of pairs
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