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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,130,685,014 | 264,462 | 264,462 |
| 2006 | $4,504,650,187 | 1,347,476 | 1,347,476 |
| 2007 | $4,965,803,374 | 4,461,515 | 4,461,515 |
| 2008 | $4,475,485,155 | 546,497 | 546,497 |
| 2009 | $10,336,691,861 | 1,141,355 | 1,141,355 |
| 2010 | $7,476,716,453 | 281,483 | 281,483 |
| 2011 | $13,659,901,040 | 307,629 | 307,629 |
Note: Quantity represents Weight in kilograms
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