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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $587,919 | 749,646 | 1,160,496 |
| 2006 | $415,679 | 345,966 | 305,728 |
| 2007 | $335,731 | 282,353 | 44,259 |
| 2008 | $1,120,832 | 1,335,712 | 928,822 |
| 2009 | $2,088,568 | 638,871 | 971,823 |
| 2010 | $1,924,316 | 1,076,954 | 1,373,345 |
| 2011 | $2,704,356 | 1,067,673 | 1,603,152 |
Note: Quantity represents Number of pairs
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