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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,282,879,463 | 30,443,272 | 30,443,272 |
| 2006 | $1,643,315,995 | 20,775,932 | 20,775,932 |
| 2007 | $1,987,270,777 | 0 | 0 |
| 2008 | $1,623,729,532 | 0 | 0 |
| 2009 | $1,052,610,435 | 0 | 0 |
| 2010 | $1,400,903,570 | 0 | 0 |
| 2011 | $1,402,863,084 | 0 | 0 |
Note: Quantity represents Weight in kilograms
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