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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $811,784,729 | 13,414 | 13,414 |
| 2006 | $1,743,987,397 | 55,190 | 55,190 |
| 2007 | $2,580,532,082 | 15,972 | 15,972 |
| 2008 | $2,462,377,302 | 12,489 | 12,489 |
| 2009 | $502,911,252 | 10,411 | 10,411 |
| 2010 | $884,811,866 | 12,472 | 12,472 |
| 2011 | $782,955,416 | 12,094 | 12,094 |
Note: Quantity represents Weight in kilograms
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