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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,242,837,418 | 870,697,353 | 870,697,353 |
| 2006 | $1,818,754,255 | 981,810,709 | 981,810,709 |
| 2007 | $1,916,571,694 | 898,818,659 | 898,818,659 |
| 2008 | $1,709,589,307 | 762,151,507 | 762,151,507 |
| 2009 | $735,511,933 | 476,321,051 | 476,321,051 |
| 2010 | $1,466,199,378 | 748,730,814 | 748,730,814 |
| 2011 | $1,899,188,090 | 923,969,066 | 923,969,066 |
Note: Quantity represents Weight in kilograms
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