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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,439,314 | 68,890 | 194,092 |
| 2006 | $1,882,402 | 137,763 | 150,871 |
| 2007 | $2,396,851 | 122,873 | 93,299 |
| 2008 | $1,635,500 | 63,853 | 52,461 |
| 2009 | $806,718 | 39,083 | 44,273 |
| 2010 | $1,600,197 | 90,204 | 70,003 |
| 2011 | $2,524,153 | 171,082 | 107,061 |
Note: Quantity represents Number of pairs
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