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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $29,954,131 | 1,288,403 | 489,206 |
| 2006 | $35,890,250 | 1,473,073 | 513,280 |
| 2007 | $25,060,185 | 959,977 | 338,611 |
| 2008 | $19,320,976 | 644,108 | 253,191 |
| 2009 | $31,413,746 | 1,033,194 | 341,543 |
| 2010 | $28,070,968 | 993,779 | 361,267 |
| 2011 | $29,535,598 | 966,304 | 340,231 |
Note: Quantity represents Number of pairs
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