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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $71,535,288 | 1,572,875 | 1,708,736 |
| 2006 | $83,742,096 | 1,850,177 | 1,862,186 |
| 2007 | $86,881,254 | 1,984,469 | 1,688,638 |
| 2008 | $95,965,005 | 1,280,871 | 1,823,664 |
| 2009 | $109,454,310 | 2,019,374 | 2,418,037 |
| 2010 | $150,214,271 | 2,411,692 | 2,827,629 |
| 2011 | $204,715,629 | 4,482,679 | 3,603,122 |
Note: Quantity represents Number of pairs
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