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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $30,539,272 | 6,636,080 | 4,883,546 |
| 2006 | $28,678,893 | 2,864,161 | 4,586,052 |
| 2007 | $35,725,589 | 2,156,883 | 5,196,030 |
| 2008 | $70,276,431 | 4,744,542 | 8,619,623 |
| 2009 | $36,299,258 | 2,721,885 | 4,221,575 |
| 2010 | $34,382,672 | 3,558,013 | 3,658,118 |
| 2011 | $30,786,046 | 3,496,831 | 3,228,021 |
Note: Quantity represents Number of pairs
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