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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $419,089,578 | 1,940,555,689 | 1,940,555,689 |
| 2006 | $616,084,050 | 2,479,793,636 | 2,479,793,636 |
| 2007 | $778,206,027 | 2,519,715,632 | 2,519,715,632 |
| 2008 | $1,022,198,227 | 2,316,331,624 | 2,316,331,624 |
| 2009 | $518,012,293 | 2,238,623,981 | 2,238,623,981 |
| 2010 | $931,611,330 | 2,809,520,686 | 2,809,520,686 |
| 2011 | $1,125,797,371 | 2,720,471,572 | 2,720,471,572 |
Note: Quantity represents Weight in kilograms
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