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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $2,469,580,000 | 26,465,840 | 26,465,840 |
| 2006 | $3,598,820,000 | 45,486,220 | 45,486,220 |
| 2007 | $3,127,838,000 | 55,680,064 | 55,680,064 |
| 2008 | $3,520,418,000 | 78,802,984 | 78,802,984 |
| 2009 | $1,887,967,000 | 45,087,009 | 45,087,009 |
| 2010 | $2,442,819,191 | 54,812,592 | 54,812,592 |
| 2011 | $2,484,130,314 | 52,128,912 | 52,128,912 |
Note: Quantity represents Weight in kilograms
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