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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,089,700 | 175,384 | 42,259 |
| 2006 | $618,935 | 95,129 | 24,003 |
| 2007 | $1,865,367 | 262,004 | 67,687 |
| 2008 | $3,127,138 | 364,263 | 104,156 |
| 2009 | $2,014,454 | 312,521 | 58,704 |
| 2010 | $1,105,529 | 157,877 | 33,969 |
| 2011 | $1,016,796 | 145,367 | 31,289 |
Note: Quantity represents Number of pairs
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