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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,603,738 | 367,341 | 1,123,687 |
| 2006 | $3,107,947 | 356,051 | 1,341,287 |
| 2007 | $4,280,489 | 503,830 | 1,826,115 |
| 2008 | $5,814,627 | 466,085 | 1,954,228 |
| 2009 | $4,191,430 | 329,970 | 1,176,951 |
| 2010 | $5,528,933 | 432,087 | 1,503,959 |
| 2011 | $5,143,824 | 479,296 | 1,706,766 |
Note: Quantity represents Number of pairs
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