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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $881,795,385 | 280,389,630 | 280,389,630 |
| 2006 | $954,501,689 | 294,275,445 | 294,275,445 |
| 2007 | $954,512,758 | 279,921,118 | 279,921,118 |
| 2008 | $1,023,035,556 | 274,458,720 | 274,458,720 |
| 2009 | $902,055,977 | 265,870,927 | 265,870,927 |
| 2010 | $1,028,130,896 | 280,803,783 | 280,803,783 |
| 2011 | $1,153,688,896 | 283,631,966 | 283,631,966 |
Note: Quantity represents Weight in kilograms
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