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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,325,699,856 | 68,979,373,028 | 68,979,373,028 |
| 2006 | $3,910,134,304 | 81,473,946,597 | 81,473,946,597 |
| 2007 | $4,772,548,671 | 87,997,414,418 | 87,997,414,418 |
| 2008 | $6,901,830,536 | 87,557,918,400 | 87,557,918,400 |
| 2009 | $6,733,578,377 | 96,948,398,752 | 96,948,398,752 |
| 2010 | $8,248,733,721 | 104,978,585,086 | 104,978,585,086 |
| 2011 | $10,448,389,555 | 101,908,870,226 | 101,908,870,226 |
Note: Quantity represents Weight in kilograms
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