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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $525,063,915 | 3,748,319,024 | 3,748,319,024 |
| 2006 | $552,135,549 | 3,555,516,008 | 3,555,516,008 |
| 2007 | $595,866,301 | 2,971,483,984 | 2,971,483,984 |
| 2008 | $778,519,952 | 2,449,179,183 | 2,449,179,183 |
| 2009 | $508,961,664 | 1,682,086,016 | 1,682,086,016 |
| 2010 | $656,647,370 | 2,186,968,984 | 2,186,968,984 |
| 2011 | $754,088,871 | 2,240,122,992 | 2,240,122,992 |
Note: Quantity represents Weight in kilograms
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