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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,666,483,075 | 729,531,316 | 729,531,316 |
| 2006 | $1,763,297,835 | 800,383,285 | 800,383,285 |
| 2007 | $1,812,780,909 | 740,751,235 | 740,751,235 |
| 2008 | $1,984,904,201 | 347,638,085 | 347,638,085 |
| 2009 | $1,227,378,578 | 415,210,687 | 415,210,687 |
| 2010 | $1,698,374,667 | 577,819,590 | 577,819,590 |
| 2011 | $2,054,918,654 | 677,738,901 | 677,738,901 |
Note: Quantity represents Weight in kilograms
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