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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $707,544 | 840,618 | 3,121,662 |
| 2006 | $1,478,669 | 1,505,752 | 6,939,295 |
| 2007 | $839,513 | 959,230 | 809,814 |
| 2008 | $1,043,213 | 251,774 | 882,071 |
| 2009 | $433,805 | 472,747 | 369,507 |
| 2010 | $122,313 | 33,652 | 61,361 |
| 2011 | $166,253 | 119,197 | 89,628 |
Note: Quantity represents Number of pairs
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