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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $54,243,608 | 2,404,981 | 2,839,979 |
| 2006 | $66,694,169 | 2,143,662 | 1,964,140 |
| 2007 | $66,511,551 | 1,489,527 | 1,857,350 |
| 2008 | $76,720,017 | 2,252,700 | 1,968,275 |
| 2009 | $49,174,865 | 1,660,876 | 1,397,875 |
| 2010 | $38,514,837 | 1,826,218 | 1,029,651 |
| 2011 | $30,449,512 | 1,193,855 | 821,115 |
Note: Quantity represents Number of pairs
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