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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $524,283 | 35,297 | 30,221 |
| 2006 | $1,484,388 | 82,266 | 85,563 |
| 2007 | $2,325,106 | 162,333 | 54,922 |
| 2008 | $11,884,605 | 3,723,260 | 198,148 |
| 2009 | $11,375,734 | 46,043,829 | 156,007 |
| 2010 | $21,373,967 | 8,606,053 | 304,720 |
| 2011 | $31,736,738 | 3,196,465 | 485,979 |
Note: Quantity represents Number of pairs
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