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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $955,229,585 | 593,532,122 | 593,532,122 |
| 2006 | $1,152,111,813 | 705,801,153 | 705,801,153 |
| 2007 | $1,122,320,257 | 641,070,876 | 641,070,876 |
| 2008 | $959,988,955 | 481,052,544 | 481,052,544 |
| 2009 | $1,007,629,997 | 478,090,356 | 478,090,356 |
| 2010 | $1,310,216,566 | 585,407,077 | 585,407,077 |
| 2011 | $1,502,518,223 | 599,233,226 | 599,233,226 |
Note: Quantity represents Weight in kilograms
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