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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,858,670 | 488,406 | 676,864 |
| 2006 | $2,728,794 | 840,325 | 489,105 |
| 2007 | $1,903,795 | 895,178 | 275,947 |
| 2008 | $2,514,789 | 1,263,547 | 241,489 |
| 2009 | $2,220,550 | 1,105,088 | 208,083 |
| 2010 | $2,416,946 | 1,487,585 | 211,432 |
| 2011 | $1,008,949 | 787,113 | 105,304 |
Note: Quantity represents Number of pairs
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