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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $607,916,000 | 691,937,600 | 691,937,600 |
| 2006 | $686,604,000 | 741,001,400 | 741,001,400 |
| 2007 | $924,057,000 | 934,150,800 | 934,150,800 |
| 2008 | $1,015,988,000 | 954,327,500 | 954,327,500 |
| 2009 | $599,438,000 | 558,658,932 | 558,658,932 |
| 2010 | $628,117,504 | 620,227,700 | 620,227,700 |
| 2011 | $570,414,121 | 506,212,137 | 506,212,137 |
Note: Quantity represents Weight in kilograms
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