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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,687,874 | 148,272 | 633,096 |
| 2006 | $2,648,332 | 146,090 | 555,614 |
| 2007 | $2,993,887 | 145,631 | 624,610 |
| 2008 | $3,618,296 | 169,112 | 618,757 |
| 2009 | $3,525,873 | 142,343 | 646,300 |
| 2010 | $3,358,203 | 134,939 | 772,181 |
| 2011 | $2,949,106 | 121,070 | 627,153 |
Note: Quantity represents Number of pairs
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