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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $949,072,000 | 949,901,900 | 949,901,900 |
| 2006 | $923,558,000 | 826,878,600 | 826,878,600 |
| 2007 | $1,073,726,000 | 843,102,700 | 843,102,700 |
| 2008 | $1,187,953,000 | 858,222,300 | 858,222,300 |
| 2009 | $888,810,000 | 869,427,300 | 869,427,300 |
| 2010 | $1,122,937,010 | 965,617,700 | 965,617,700 |
| 2011 | $1,281,643,698 | 932,518,267 | 932,518,267 |
Note: Quantity represents Weight in kilograms
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