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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,955,816,467 | 6,048,566,040 | 6,048,566,040 |
| 2006 | $2,204,512,524 | 5,996,394,616 | 5,996,394,616 |
| 2007 | $2,913,288,916 | 7,408,298,560 | 7,408,298,560 |
| 2008 | $5,358,502,435 | 8,672,446,635 | 8,672,446,635 |
| 2009 | $4,321,696,800 | 6,902,445,667 | 6,902,445,667 |
| 2010 | $4,723,866,074 | 7,589,515,179 | 7,589,515,179 |
| 2011 | $5,732,153,759 | 9,185,063,259 | 9,185,063,259 |
Note: Quantity represents Weight in kilograms
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