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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $186,331,796 | 2,940,947,016 | 2,940,947,016 |
| 2006 | $241,776,139 | 3,281,776,000 | 3,281,776,000 |
| 2007 | $82,361,510 | 990,269,976 | 990,269,976 |
| 2008 | $64,140,571 | 621,016,008 | 621,016,008 |
| 2009 | $52,383,105 | 556,362,016 | 556,362,016 |
| 2010 | $60,881,615 | 612,690,016 | 612,690,016 |
| 2011 | $50,819,412 | 606,239,000 | 606,239,000 |
Note: Quantity represents Weight in kilograms
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