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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $909,998,000 | 252,466,965 | 252,466,965 |
| 2006 | $1,244,326,000 | 295,297,137 | 295,297,137 |
| 2007 | $1,535,491,000 | 314,398,100 | 314,398,100 |
| 2008 | $1,628,221,000 | 321,837,274 | 321,837,274 |
| 2009 | $1,090,173,000 | 264,665,800 | 264,665,800 |
| 2010 | $1,422,451,103 | 367,451,684 | 367,451,684 |
| 2011 | $1,813,794,284 | 406,896,889 | 406,896,889 |
Note: Quantity represents Weight in kilograms
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