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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,762,355 | 490,364 | 176,015 |
| 2006 | $3,472,422 | 1,114,144 | 1,625,589 |
| 2007 | $2,299,224 | 405,948 | 178,519 |
| 2008 | $2,692,741 | 449,975 | 196,256 |
| 2009 | $3,135,902 | 706,068 | 209,838 |
| 2010 | $3,352,933 | 512,568 | 204,393 |
Note: Quantity represents Number of pairs
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