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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $740,446,389 | 586,810,293 | 586,810,293 |
| 2006 | $887,346,521 | 632,715,124 | 632,715,124 |
| 2007 | $971,643,617 | 664,752,683 | 664,752,683 |
| 2008 | $1,190,219,230 | 697,643,861 | 697,643,861 |
| 2009 | $1,204,666,629 | 605,999,461 | 605,999,461 |
| 2010 | $1,275,751,927 | 669,689,239 | 669,689,239 |
| 2011 | $1,370,153,586 | 748,194,793 | 748,194,793 |
Note: Quantity represents Weight in kilograms
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