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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $391,397,546 | 203,180,589 | 203,180,589 |
| 2006 | $341,667,649 | 194,806,149 | 194,806,149 |
| 2007 | $404,818,575 | 188,852,633 | 188,852,633 |
| 2008 | $392,570,036 | 187,171,519 | 187,171,519 |
| 2009 | $263,689,790 | 131,309,885 | 131,309,885 |
| 2010 | $253,726,053 | 149,826,117 | 149,826,117 |
| 2011 | $263,736,901 | 134,041,819 | 134,041,819 |
Note: Quantity represents Weight in kilograms
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