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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $23,263,510 | 312,727 | 432,734 |
| 2006 | $26,812,069 | 321,945 | 468,988 |
| 2007 | $27,843,439 | 276,018 | 376,387 |
| 2008 | $29,121,490 | 266,287 | 432,100 |
| 2009 | $33,848,897 | 304,444 | 510,127 |
| 2010 | $43,677,296 | 655,433 | 915,556 |
| 2011 | $51,005,883 | 1,812,292 | 779,438 |
Note: Quantity represents Number of pairs
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