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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $4,481,118,301 | 42,434,832 | 42,434,832 |
| 2006 | $5,385,180,099 | 35,613,486 | 35,613,486 |
| 2007 | $5,264,646,659 | 0 | 0 |
| 2008 | $5,763,204,199 | 44,640,594 | 44,640,594 |
| 2009 | $4,803,443,349 | 0 | 0 |
| 2010 | $4,777,738,972 | 0 | 0 |
| 2011 | $4,581,647,185 | 33,974,474 | 33,974,474 |
Note: Quantity represents Weight in kilograms
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