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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,522,497 | 205,060 | 1,020,434 |
| 2006 | $3,928,637 | 529,135 | 1,703,634 |
| 2007 | $4,757,831 | 837,896 | 1,876,269 |
| 2008 | $5,121,287 | 723,361 | 1,457,371 |
| 2009 | $8,162,702 | 874,172 | 2,647,312 |
| 2010 | $9,806,966 | 1,047,223 | 2,722,299 |
| 2011 | $11,663,662 | 1,479,477 | 2,851,330 |
Note: Quantity represents Number of pairs
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