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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,507,854,419 | 14,900,074 | 14,900,074 |
| 2006 | $1,830,174,540 | 26,591,999 | 26,591,999 |
| 2007 | $768,747,445 | 245 | 0 |
| 2008 | $4,169,186,682 | 40,496,152 | 40,496,152 |
| 2009 | $3,294,787,683 | 0 | 0 |
| 2010 | $4,468,176,571 | 0 | 0 |
| 2011 | $4,760,630,952 | 35,301,700 | 35,301,700 |
Note: Quantity represents Weight in kilograms
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