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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,802,691 | 179,300 | 175,803 |
| 2006 | $2,203,703 | 112,104 | 109,809 |
| 2007 | $2,545,727 | 110,526 | 103,781 |
| 2008 | $3,363,863 | 161,122 | 168,917 |
| 2009 | $3,826,928 | 145,896 | 171,132 |
| 2010 | $10,021,038 | 428,676 | 307,914 |
| 2011 | $13,140,923 | 564,315 | 631,953 |
Note: Quantity represents Number of pairs
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