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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,612,341 | 281,334 | 604,451 |
| 2006 | $3,222,805 | 198,071 | 373,347 |
| 2007 | $6,147,999 | 312,644 | 518,694 |
| 2008 | $5,157,199 | 259,488 | 402,227 |
| 2009 | $5,212,715 | 301,237 | 514,663 |
| 2010 | $7,893,026 | 475,257 | 457,497 |
| 2011 | $12,793,159 | 546,570 | 881,549 |
Note: Quantity represents Number of pairs
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