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| Year | Trade Value | Weight (kg) | Quantity |
| 2006 | $915,414 | 307,399 | 68,401 |
| 2007 | $1,247,923 | 355,499 | 49,036 |
| 2008 | $1,962,246 | 479,593 | 0 |
| 2009 | $1,861,531 | 483,478 | 61,974 |
| 2010 | $3,073,994 | 852,693 | 106,776 |
| 2011 | $2,168,969 | 465,968 | 75,583 |
Note: Quantity represents Number of pairs
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