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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,719,197 | 311,720 | 176,946 |
| 2006 | $5,666,992 | 382,944 | 196,477 |
| 2007 | $7,213,053 | 467,660 | 236,084 |
| 2008 | $9,657,963 | 634,249 | 321,098 |
| 2009 | $6,342,553 | 444,896 | 222,261 |
| 2010 | $7,883,875 | 549,808 | 283,663 |
| 2011 | $10,415,077 | 667,670 | 615,265 |
Note: Quantity represents Number of pairs
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