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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $132,137 | 139,833 | 192,409 |
| 2006 | $346,983 | 191,467 | 76,861 |
| 2007 | $585,130 | 218,965 | 111,257 |
| 2008 | $1,441,719 | 249,512 | 617,622 |
| 2009 | $1,939,578 | 268,844 | 180,696 |
| 2010 | $2,562,655 | 754,982 | 1,243,623 |
| 2011 | $4,419,082 | 1,148,094 | 1,988,501 |
Note: Quantity represents Number of pairs
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