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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $12,903,125 | 337,827 | 409,924 |
| 2006 | $14,880,412 | 579,283 | 1,494,407 |
| 2007 | $16,051,780 | 670,711 | 793,959 |
| 2008 | $13,444,122 | 320,016 | 902,855 |
| 2009 | $13,607,720 | 245,129 | 796,791 |
| 2010 | $13,932,145 | 356,433 | 635,212 |
| 2011 | $13,447,249 | 386,119 | 639,848 |
Note: Quantity represents Number of pairs
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