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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $22,936,559 | 1,905,081 | 1,599,360 |
| 2006 | $11,743,202 | 663,260 | 967,077 |
| 2007 | $9,856,833 | 376,075 | 501,543 |
| 2008 | $11,743,599 | 419,638 | 631,120 |
| 2009 | $12,348,049 | 414,053 | 591,306 |
| 2010 | $10,704,573 | 339,350 | 350,002 |
Note: Quantity represents Number of pairs
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