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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $15,898,323 | 1,397,933 | 1,617,522 |
| 2006 | $14,551,454 | 1,129,898 | 1,349,015 |
| 2007 | $21,755,286 | 1,491,662 | 1,921,158 |
| 2008 | $22,876,234 | 1,493,343 | 1,832,180 |
| 2009 | $11,109,584 | 662,405 | 853,385 |
| 2010 | $12,545,987 | 615,672 | 847,146 |
| 2011 | $21,036,546 | 1,022,643 | 1,523,388 |
Note: Quantity represents Number of pairs
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