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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $306,577,000 | 435,843,100 | 435,843,100 |
| 2006 | $341,017,000 | 462,642,300 | 462,642,300 |
| 2007 | $388,694,000 | 412,995,200 | 412,995,200 |
| 2008 | $436,165,000 | 414,663,400 | 414,663,400 |
| 2009 | $348,931,000 | 339,241,000 | 339,241,000 |
| 2010 | $393,568,362 | 401,928,800 | 401,928,800 |
| 2011 | $482,332,768 | 417,292,064 | 417,292,064 |
Note: Quantity represents Weight in kilograms
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