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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $125,058,000 | 351,719,700 | 351,719,700 |
| 2006 | $156,719,000 | 451,301,300 | 451,301,300 |
| 2007 | $261,404,000 | 655,010,400 | 655,010,400 |
| 2008 | $396,958,000 | 713,471,100 | 713,471,100 |
| 2009 | $173,609,000 | 402,132,000 | 402,132,000 |
| 2010 | $197,691,717 | 421,287,200 | 421,287,200 |
| 2011 | $345,512,972 | 586,472,733 | 586,472,733 |
Note: Quantity represents Weight in kilograms
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