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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $649,545,191 | 2,793,369,006 | 2,793,369,006 |
| 2006 | $836,183,265 | 2,998,014,731 | 2,998,014,731 |
| 2007 | $819,875,819 | 2,510,978,448 | 2,510,978,448 |
| 2008 | $1,023,486,757 | 2,350,546,253 | 2,350,546,253 |
| 2009 | $754,970,590 | 1,845,255,844 | 1,845,255,844 |
| 2010 | $1,287,199,732 | 3,524,603,792 | 3,524,603,792 |
Note: Quantity represents Weight in kilograms
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