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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,322,959 | 53,652 | 89,721 |
| 2006 | $1,478,025 | 36,077 | 62,238 |
| 2007 | $2,891,346 | 66,259 | 112,052 |
| 2008 | $4,284,616 | 94,038 | 168,866 |
| 2009 | $3,642,495 | 81,832 | 132,746 |
| 2010 | $4,859,706 | 108,215 | 191,099 |
| 2011 | $8,012,898 | 179,183 | 345,087 |
Note: Quantity represents Number of pairs
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