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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $581,206,901 | 7,753,664,823 | 7,753,664,823 |
| 2006 | $686,601,981 | 10,283,373,315 | 10,283,373,315 |
| 2007 | $1,075,509,568 | 13,277,915,763 | 13,277,915,763 |
| 2008 | $800,064,035 | 5,600,093,103 | 5,600,093,103 |
| 2009 | $514,422,501 | 4,467,152,068 | 4,467,152,068 |
| 2010 | $693,239,159 | 6,861,786,342 | 6,861,786,342 |
Note: Quantity represents Weight in kilograms
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