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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $456,304,322 | 5,500,799 | 5,500,799 |
| 2006 | $549,402,759 | 7,313,220 | 7,313,220 |
| 2007 | $858,462,427 | 13,862,729 | 13,862,729 |
| 2008 | $1,306,947,918 | 22,321,984 | 22,321,984 |
| 2009 | $1,501,704,236 | 32,617,532 | 32,617,532 |
| 2010 | $1,877,205,938 | 39,138,902 | 39,138,902 |
| 2011 | $1,681,126,542 | 34,010,237 | 34,010,237 |
Note: Quantity represents Weight in kilograms
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