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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $394,539,554 | 434,347,452 | 434,347,452 |
| 2006 | $421,564,785 | 423,738,763 | 423,738,763 |
| 2007 | $476,981,140 | 425,756,460 | 425,756,460 |
| 2008 | $556,953,535 | 455,482,631 | 455,482,631 |
| 2009 | $431,860,160 | 467,035,519 | 467,035,519 |
| 2010 | $548,849,597 | 538,405,160 | 538,405,160 |
| 2011 | $642,139,008 | 554,497,689 | 554,497,689 |
Note: Quantity represents Weight in kilograms
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