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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $470,414 | 70,231 | 115,236 |
| 2006 | $443,404 | 79,199 | 111,020 |
| 2007 | $1,690,933 | 1,402,126 | 217,698 |
| 2008 | $2,926,881 | 154,893 | 238,965 |
| 2009 | $1,463,788 | 72,107 | 133,732 |
| 2010 | $1,809,459 | 127,492 | 213,330 |
| 2011 | $2,686,703 | 74,992 | 258,633 |
Note: Quantity represents Number of pairs
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