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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,842,562 | 436,267 | 569,650 |
| 2006 | $4,208,259 | 232,141 | 696,415 |
| 2007 | $3,714,443 | 180,681 | 726,033 |
| 2008 | $4,032,426 | 188,467 | 886,629 |
| 2009 | $5,486,086 | 221,479 | 610,621 |
| 2010 | $5,062,035 | 203,402 | 852,179 |
| 2011 | $6,991,083 | 287,007 | 752,855 |
Note: Quantity represents Number of pairs
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