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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $327,219,999 | 45,212,566 | 45,212,566 |
| 2006 | $353,886,685 | 54,477,637 | 54,477,637 |
| 2007 | $395,346,093 | 60,211,991 | 60,211,991 |
| 2008 | $435,394,196 | 60,751,604 | 60,751,604 |
| 2009 | $420,281,803 | 60,229,452 | 60,229,452 |
| 2010 | $487,688,405 | 70,110,161 | 70,110,161 |
| 2011 | $577,197,204 | 75,345,439 | 75,345,439 |
Note: Quantity represents Weight in kilograms
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