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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,203,125 | 238,175 | 245,088 |
| 2006 | $5,509,258 | 245,664 | 229,960 |
| 2007 | $6,439,752 | 217,409 | 241,063 |
| 2008 | $6,520,579 | 168,351 | 158,830 |
| 2009 | $5,814,610 | 137,301 | 130,271 |
| 2010 | $3,914,367 | 105,164 | 99,749 |
| 2011 | $3,675,163 | 145,098 | 136,210 |
Note: Quantity represents Number of pairs
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