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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $6,296 | 356 | 1,987 |
| 2006 | $6,868 | 655 | 1,978 |
| 2007 | $2,219,907 | 129,064 | 283,983 |
| 2008 | $4,802,011 | 267,943 | 1,021,668 |
| 2009 | $4,820,183 | 385,096 | 1,343,570 |
| 2010 | $2,931,042 | 295,022 | 822,133 |
| 2011 | $1,666,897 | 176,128 | 505,830 |
Note: Quantity represents Number of pairs
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