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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $83,635,000 | 8,205,257,400 | 8,205,257,400 |
| 2006 | $110,760,000 | 10,437,458,100 | 10,437,458,100 |
| 2007 | $114,690,000 | 9,472,110,100 | 9,472,110,100 |
| 2008 | $105,214,000 | 8,248,147,488 | 8,248,147,488 |
| 2009 | $111,542,000 | 8,771,996,900 | 8,771,996,900 |
| 2010 | $86,106,205 | 7,267,528,834 | 7,267,528,834 |
| 2011 | $117,771,128 | 9,720,515,850 | 9,720,515,850 |
Note: Quantity represents Weight in kilograms
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