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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $16,002,956 | 1,513,773 | 3,463,277 |
| 2006 | $30,996,142 | 2,532,276 | 6,122,457 |
| 2007 | $80,220,116 | 2,922,801 | 5,668,005 |
| 2008 | $68,899,074 | 1,743,157 | 24,196,849 |
| 2009 | $65,533,346 | 13,174,943 | 11,317,200 |
| 2010 | $97,676,552 | 5,998,088 | 9,235,657 |
| 2011 | $164,329,690 | 8,294,302 | 12,769,420 |
Note: Quantity represents Number of pairs
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