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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,687,906 | 119,472 | 302,538 |
| 2006 | $597,570 | 115,225 | 107,108 |
| 2007 | $1,142,970 | 161,072 | 161,098 |
| 2008 | $2,483,977 | 199,951 | 238,530 |
| 2009 | $6,086,627 | 361,007 | 570,365 |
| 2010 | $9,411,495 | 432,402 | 823,308 |
| 2011 | $11,275,487 | 576,830 | 1,176,818 |
Note: Quantity represents Number of pairs
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