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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $33,350,929 | 894,708 | 309,924 |
| 2006 | $41,350,499 | 1,031,332 | 0 |
| 2007 | $33,317,152 | 553,835 | 277,371 |
| 2008 | $38,300,783 | 835,544 | 312,936 |
| 2009 | $37,252,469 | 853,965 | 259,622 |
| 2010 | $58,054,505 | 1,309,801 | 423,115 |
| 2011 | $59,684,114 | 1,523,938 | 439,955 |
Note: Quantity represents Number of pairs
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