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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,047,144,586 | 53,270,591 | 53,270,591 |
| 2006 | $3,440,528,154 | 58,129,822 | 58,129,822 |
| 2007 | $3,689,471,753 | 62,339,932 | 62,339,932 |
| 2008 | $3,826,482,917 | 59,391,421 | 59,391,421 |
| 2009 | $3,208,822,595 | 43,787,135 | 43,787,135 |
| 2010 | $4,338,459,835 | 58,675,651 | 58,675,651 |
| 2011 | $4,494,774,715 | 55,968,559 | 55,968,559 |
Note: Quantity represents Weight in kilograms
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