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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,729,377,000 | 341,954,086 | 341,954,086 |
| 2006 | $1,893,110,000 | 372,296,887 | 372,296,887 |
| 2007 | $2,678,797,000 | 436,908,779 | 436,908,779 |
| 2008 | $3,035,777,000 | 466,898,915 | 466,898,915 |
| 2009 | $2,636,934,000 | 424,414,622 | 424,414,622 |
| 2010 | $3,096,558,143 | 521,657,193 | 521,657,193 |
| 2011 | $3,727,047,777 | 624,297,535 | 624,297,535 |
Note: Quantity represents Weight in kilograms
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