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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $921,342 | 59,246 | 305,753 |
| 2006 | $858,116 | 68,183 | 219,260 |
| 2007 | $763,445 | 78,349 | 297,738 |
| 2008 | $764,134 | 46,694 | 182,552 |
| 2009 | $759,059 | 54,632 | 176,601 |
| 2010 | $1,094,266 | 58,970 | 254,395 |
| 2011 | $1,258,812 | 61,369 | 291,207 |
Note: Quantity represents Number of pairs
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