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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $597,907,000 | 254,233,100 | 254,233,100 |
| 2006 | $696,303,000 | 292,042,000 | 292,042,000 |
| 2007 | $841,797,000 | 325,280,500 | 325,280,500 |
| 2008 | $971,216,000 | 323,582,866 | 323,582,866 |
| 2009 | $752,622,000 | 284,616,378 | 284,616,378 |
| 2010 | $932,875,301 | 331,012,300 | 331,012,300 |
| 2011 | $1,078,038,729 | 308,896,534 | 308,896,534 |
Note: Quantity represents Weight in kilograms
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