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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,089,043 | 193,896 | 294,053 |
| 2006 | $2,733,179 | 190,560 | 219,241 |
| 2007 | $2,947,551 | 184,911 | 294,996 |
| 2008 | $2,912,279 | 150,161 | 254,925 |
| 2009 | $1,984,517 | 96,103 | 174,634 |
| 2010 | $4,178,529 | 166,816 | 290,325 |
| 2011 | $5,297,731 | 191,178 | 310,603 |
Note: Quantity represents Number of pairs
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