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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,968,556 | 125,125 | 889,148 |
| 2006 | $3,185,708 | 76,642 | 89,826 |
| 2007 | $3,518,913 | 63,792 | 75,550 |
| 2008 | $2,929,588 | 50,962 | 60,091 |
| 2009 | $2,789,338 | 54,641 | 65,897 |
| 2010 | $3,401,260 | 88,124 | 94,879 |
| 2011 | $2,733,776 | 47,648 | 57,576 |
Note: Quantity represents Number of pairs
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