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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $297,329,000 | 489,919,300 | 489,919,300 |
| 2006 | $386,287,000 | 553,377,930 | 553,377,930 |
| 2007 | $496,874,000 | 595,546,400 | 595,546,400 |
| 2008 | $638,292,000 | 616,675,500 | 616,675,500 |
| 2009 | $336,050,000 | 546,932,396 | 546,932,396 |
| 2010 | $371,000,679 | 488,295,500 | 488,295,500 |
| 2011 | $452,726,013 | 488,694,228 | 488,694,228 |
Note: Quantity represents Weight in kilograms
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