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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,117,000 | 386,024 | 165,298 |
| 2006 | $4,318,000 | 499,100 | 228,988 |
| 2007 | $4,284,000 | 399,200 | 145,952 |
| 2008 | $5,148,000 | 492,391 | 194,630 |
| 2009 | $4,365,000 | 356,845 | 147,442 |
| 2010 | $2,729,000 | 250,876 | 97,928 |
| 2011 | $2,599,000 | 253,084 | 100,320 |
Note: Quantity represents Number of pairs
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