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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $9,346,947 | 969,058 | 1,582,449 |
| 2006 | $12,812,373 | 1,304,526 | 2,150,739 |
| 2007 | $20,794,170 | 1,549,896 | 2,682,756 |
| 2008 | $20,018,479 | 1,196,553 | 2,324,926 |
| 2009 | $11,033,256 | 1,413,371 | 1,751,517 |
| 2010 | $11,117,178 | 1,025,429 | 1,541,406 |
| 2011 | $14,441,235 | 1,005,814 | 1,809,218 |
Note: Quantity represents Number of pairs
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