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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $649,983 | 413,147 | 256,606 |
| 2006 | $1,408,929 | 747,080 | 132,730 |
| 2007 | $2,437,983 | 508,460 | 257,469 |
| 2008 | $1,842,724 | 296,029 | 161,474 |
| 2009 | $2,231,912 | 106,234 | 184,258 |
| 2010 | $3,421,358 | 264,369 | 266,211 |
| 2011 | $4,475,282 | 735,867 | 445,960 |
Note: Quantity represents Number of pairs
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