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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,106,355 | 314,190 | 298,787 |
| 2006 | $7,474,139 | 576,602 | 520,449 |
| 2007 | $8,955,022 | 607,514 | 528,155 |
| 2008 | $12,371,014 | 575,279 | 625,532 |
| 2009 | $7,427,564 | 295,258 | 300,467 |
| 2010 | $10,046,446 | 460,940 | 457,947 |
| 2011 | $11,721,676 | 547,437 | 627,061 |
Note: Quantity represents Number of pairs
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