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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $32,674,513 | 1,064,708 | 408,344 |
| 2006 | $34,182,057 | 1,083,748 | 531,163 |
| 2007 | $31,304,374 | 1,001,106 | 462,661 |
| 2008 | $39,318,222 | 1,023,129 | 488,903 |
| 2009 | $38,175,842 | 1,035,354 | 504,441 |
| 2010 | $47,663,674 | 1,392,249 | 689,565 |
| 2011 | $47,785,961 | 1,326,631 | 695,122 |
Note: Quantity represents Number of pairs
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