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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,139,684,000 | 283,332,740 | 283,332,740 |
| 2006 | $1,164,278,000 | 290,300,648 | 290,300,648 |
| 2007 | $1,329,040,000 | 300,115,226 | 300,115,226 |
| 2008 | $1,399,030,000 | 295,104,600 | 295,104,600 |
| 2009 | $1,040,061,000 | 234,930,004 | 234,930,004 |
| 2010 | $1,289,671,802 | 300,160,400 | 300,160,400 |
| 2011 | $1,372,592,934 | 293,608,055 | 293,608,055 |
Note: Quantity represents Weight in kilograms
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