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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $24,092,013 | 1,161,920 | 1,186,288 |
| 2006 | $26,741,667 | 1,199,956 | 1,316,757 |
| 2007 | $35,470,959 | 717,528 | 1,631,593 |
| 2008 | $35,356,327 | 983,090 | 1,490,420 |
| 2009 | $24,738,299 | 857,735 | 896,756 |
| 2010 | $18,127,164 | 504,366 | 646,158 |
| 2011 | $18,859,981 | 487,153 | 669,620 |
Note: Quantity represents Number of pairs
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