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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,974,489 | 59,098 | 150,295 |
| 2006 | $1,838,863 | 52,373 | 147,301 |
| 2007 | $1,245,014 | 38,596 | 88,746 |
| 2008 | $925,982 | 20,855 | 64,870 |
| 2009 | $707,877 | 13,401 | 48,722 |
| 2010 | $1,562,806 | 30,112 | 138,236 |
| 2011 | $2,083,849 | 34,547 | 147,787 |
Note: Quantity represents Number of pairs
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