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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $800,922 | 27,756 | 37,730 |
| 2006 | $446,133 | 15,461 | 21,016 |
| 2007 | $684,400 | 21,432 | 41,013 |
| 2008 | $329,765 | 8,752 | 1,819,708 |
| 2009 | $7,319 | 171 | 2,083 |
| 2010 | $317,309 | 185,871 | 677,052 |
| 2011 | $204,018 | 90,894 | 7,157 |
Note: Quantity represents Number of pairs
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