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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,247,015 | 897,973 | 1,250,809 |
| 2006 | $2,307,485 | 845,927 | 1,284,469 |
| 2007 | $1,921,637 | 1,457,715 | 813,554 |
| 2008 | $1,869,136 | 663,665 | 651,258 |
| 2009 | $1,975,796 | 456,701 | 625,124 |
| 2010 | $1,203,613 | 1,352,013 | 337,604 |
| 2011 | $363,228 | 245,947 | 104,152 |
Note: Quantity represents Number of pairs
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