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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $824,132,000 | 615,241,400 | 615,241,400 |
| 2006 | $805,643,000 | 595,619,400 | 595,619,400 |
| 2007 | $914,797,000 | 603,626,160 | 603,626,160 |
| 2008 | $903,320,000 | 568,435,288 | 568,435,288 |
| 2009 | $564,126,000 | 472,996,977 | 472,996,977 |
| 2010 | $632,610,635 | 470,980,786 | 470,980,786 |
| 2011 | $705,371,266 | 387,115,412 | 387,115,412 |
Note: Quantity represents Weight in kilograms
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