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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,783,009 | 129,256 | 230,931 |
| 2006 | $2,022,586 | 147,767 | 252,246 |
| 2007 | $2,627,656 | 235,319 | 540,036 |
| 2008 | $2,692,872 | 292,461 | 630,162 |
| 2009 | $1,710,602 | 167,771 | 347,760 |
| 2010 | $1,849,382 | 165,036 | 302,382 |
| 2011 | $1,529,796 | 131,332 | 250,981 |
Note: Quantity represents Number of pairs
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