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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $5,188,101 | 1,469,392 | 3,536,408 |
| 2006 | $5,933,227 | 1,758,147 | 4,020,412 |
| 2007 | $7,387,610 | 1,850,779 | 4,399,435 |
| 2008 | $8,265,632 | 1,289,296 | 3,459,154 |
| 2009 | $7,859,475 | 1,549,582 | 3,724,431 |
| 2010 | $10,825,142 | 2,361,342 | 5,191,077 |
| 2011 | $12,497,222 | 1,966,052 | 4,193,127 |
Note: Quantity represents Number of pairs
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