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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,239,222 | 35,421 | 23,379 |
| 2006 | $2,157,447 | 71,977 | 50,670 |
| 2007 | $2,849,456 | 74,824 | 51,265 |
| 2008 | $1,334,341 | 218,209 | 40,874 |
| 2009 | $968,419 | 22,235 | 12,438 |
| 2010 | $1,598,179 | 54,448 | 33,168 |
| 2011 | $2,097,669 | 90,590 | 58,185 |
Note: Quantity represents Number of pairs
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