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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $449,480,000 | 100,224,346 | 100,224,346 |
| 2006 | $501,022,000 | 108,463,733 | 108,463,733 |
| 2007 | $612,248,000 | 119,304,900 | 119,304,900 |
| 2008 | $741,053,000 | 124,045,602 | 124,045,602 |
| 2009 | $710,681,000 | 127,022,400 | 127,022,400 |
| 2010 | $748,181,235 | 136,982,800 | 136,982,800 |
| 2011 | $933,569,827 | 151,405,974 | 151,405,974 |
Note: Quantity represents Weight in kilograms
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