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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,713,091 | 313,677 | 194,876 |
| 2006 | $2,269,853 | 421,875 | 248,089 |
| 2007 | $2,259,585 | 285,603 | 171,800 |
| 2008 | $1,335,884 | 151,319 | 95,217 |
| 2009 | $1,001,106 | 125,886 | 83,561 |
| 2010 | $644,161 | 80,066 | 57,665 |
| 2011 | $1,277,664 | 60,264 | 73,661 |
Note: Quantity represents Number of pairs
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