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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,441,465 | 229,296 | 170,415 |
| 2006 | $4,403,986 | 188,020 | 132,201 |
| 2007 | $10,719,307 | 321,554 | 698,876 |
| 2008 | $12,271,231 | 251,969 | 867,525 |
| 2009 | $10,194,269 | 187,471 | 465,241 |
| 2010 | $9,961,603 | 145,642 | 455,973 |
| 2011 | $10,502,522 | 216,566 | 430,958 |
Note: Quantity represents Number of pairs
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