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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,024,073 | 186,631 | 261,948 |
| 2006 | $3,637,609 | 220,635 | 249,258 |
| 2007 | $5,115,036 | 245,470 | 288,365 |
| 2008 | $4,344,990 | 170,773 | 215,871 |
| 2009 | $4,785,114 | 196,498 | 224,230 |
| 2010 | $6,922,894 | 229,582 | 314,290 |
| 2011 | $12,519,681 | 938,916 | 1,082,087 |
Note: Quantity represents Number of pairs
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