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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,043,596 | 159,721 | 1,200,759 |
| 2006 | $2,357,907 | 184,286 | 1,468,340 |
| 2007 | $2,652,528 | 208,592 | 1,389,353 |
| 2008 | $5,992,240 | 441,639 | 1,704,264 |
| 2009 | $8,495,555 | 495,074 | 2,488,567 |
| 2010 | $9,345,673 | 581,878 | 5,094,559 |
| 2011 | $13,328,457 | 764,244 | 5,053,307 |
Note: Quantity represents Number of pairs
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