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| Year | Trade Value | Weight (kg) | Quantity |
| 2006 | $4,612,583 | 848,821 | 660,611 |
| 2007 | $9,737,316 | 1,557,257 | 1,473,588 |
| 2008 | $11,347,386 | 1,618,176 | 1,187,991 |
| 2009 | $14,333,413 | 2,350,759 | 1,329,383 |
| 2010 | $24,576,830 | 3,233,444 | 1,912,288 |
| 2011 | $32,534,091 | 3,904,680 | 3,242,009 |
Note: Quantity represents Number of pairs
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