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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $409,407,000 | 10,215,848 | 10,215,848 |
| 2006 | $1,048,378,000 | 17,098,381 | 17,098,381 |
| 2007 | $1,831,397,000 | 25,412,057 | 25,412,057 |
| 2008 | $3,560,755,000 | 63,129,109 | 63,129,109 |
| 2009 | $2,728,532,000 | 66,137,439 | 66,137,439 |
| 2010 | $1,994,941,048 | 49,980,832 | 49,980,832 |
| 2011 | $1,607,369,626 | 33,845,888 | 33,845,888 |
Note: Quantity represents Weight in kilograms
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