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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,681,909 | 170,702 | 375,556 |
| 2006 | $7,508,110 | 256,619 | 347,509 |
| 2007 | $8,574,547 | 230,453 | 306,157 |
| 2008 | $11,547,961 | 219,727 | 329,547 |
| 2009 | $11,021,777 | 233,550 | 361,932 |
| 2010 | $7,210,968 | 149,710 | 206,076 |
| 2011 | $9,288,156 | 227,250 | 324,451 |
Note: Quantity represents Number of pairs
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