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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,746,749 | 156,659 | 127,899 |
| 2006 | $3,350,081 | 193,064 | 129,918 |
| 2007 | $4,242,948 | 207,415 | 166,135 |
| 2008 | $5,693,699 | 260,860 | 216,163 |
| 2009 | $5,394,623 | 225,654 | 188,700 |
| 2010 | $6,508,155 | 282,284 | 255,628 |
| 2011 | $9,277,781 | 385,764 | 348,407 |
Note: Quantity represents Number of pairs
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