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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,063,380 | 301,516 | 1,247,108 |
| 2006 | $2,034,602 | 118,568 | 710,475 |
| 2007 | $2,968,584 | 184,697 | 920,950 |
| 2008 | $4,885,300 | 433,735 | 925,870 |
| 2009 | $4,636,675 | 354,069 | 523,951 |
| 2010 | $4,471,861 | 329,248 | 549,513 |
| 2011 | $3,353,200 | 127,547 | 348,783 |
Note: Quantity represents Number of pairs
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