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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,434,960 | 75,217 | 110,646 |
| 2006 | $2,067,144 | 58,649 | 93,932 |
| 2007 | $2,766,744 | 65,172 | 94,830 |
| 2008 | $2,398,019 | 48,530 | 47,587 |
| 2009 | $1,083,096 | 27,075 | 17,467 |
| 2010 | $1,094,068 | 19,585 | 17,266 |
| 2011 | $1,313,236 | 23,353 | 40,612 |
Note: Quantity represents Number of pairs
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