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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,784,262 | 80,075 | 286,080 |
| 2006 | $2,522,107 | 220,093 | 453,410 |
| 2007 | $3,106,331 | 156,566 | 170,818 |
| 2008 | $4,069,196 | 151,134 | 155,930 |
| 2009 | $5,600,835 | 151,998 | 245,070 |
| 2010 | $6,551,559 | 179,222 | 214,330 |
Note: Quantity represents Number of pairs
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