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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,115,279 | 51,790 | 52,980 |
| 2006 | $177,336 | 8,235 | 11,356 |
| 2007 | $402,236 | 0 | 32,490 |
| 2008 | $274,597 | 0 | 14,757 |
| 2009 | $175,495 | 0 | 5,575 |
| 2010 | $224,664 | 7,026 | 23,981 |
| 2011 | $935,922 | 31,144 | 90,463 |
Note: Quantity represents Number of pairs
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