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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $590,821,832 | 3,583,232,826 | 3,583,232,826 |
| 2006 | $681,222,074 | 3,398,332,202 | 3,398,332,202 |
| 2007 | $848,926,111 | 3,224,980,270 | 3,224,980,270 |
| 2008 | $1,245,444,991 | 3,213,582,516 | 3,213,582,516 |
| 2009 | $727,948,530 | 2,776,925,461 | 2,776,925,461 |
| 2010 | $844,900,755 | 3,484,294,826 | 3,484,294,826 |
| 2011 | $1,321,793,808 | 4,047,791,467 | 4,047,791,467 |
Note: Quantity represents Weight in kilograms
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