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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,192,412 | 184,976 | 216,237 |
| 2006 | $3,785,784 | 220,196 | 98,429 |
| 2007 | $5,697,074 | 250,837 | 146,710 |
| 2008 | $4,057,630 | 169,004 | 89,740 |
| 2009 | $3,683,484 | 178,459 | 90,254 |
| 2010 | $3,983,594 | 224,678 | 106,121 |
| 2011 | $5,797,533 | 274,980 | 147,350 |
Note: Quantity represents Number of pairs
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