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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $624,836 | 50,550 | 178,321 |
| 2006 | $651,642 | 56,949 | 97,824 |
| 2007 | $564,304 | 52,960 | 62,177 |
| 2008 | $546,437 | 81,415 | 52,132 |
| 2009 | $511,536 | 41,364 | 42,677 |
| 2010 | $412,552 | 30,973 | 0 |
| 2011 | $456,334 | 43,703 | 0 |
Note: Quantity represents Number of pairs
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