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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $331,417,507 | 6,095,980,170 | 6,095,980,170 |
| 2006 | $184,786,629 | 2,972,374,944 | 2,972,374,944 |
| 2008 | $295,571,145 | 4,428,862,420 | 4,428,862,420 |
| 2009 | $14,051,610 | 203,133,771 | 203,133,771 |
| 2010 | $179,444,470 | 1,758,297,570 | 1,758,297,570 |
| 2011 | $73,510,128 | 909,101,337 | 909,101,337 |
Note: Quantity represents Weight in kilograms
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