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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,263,368,342 | 370,736,269 | 370,736,269 |
| 2006 | $1,399,516,436 | 374,335,847 | 374,335,847 |
| 2007 | $1,516,721,684 | 388,099,454 | 388,099,454 |
| 2008 | $1,714,559,315 | 378,706,779 | 378,706,779 |
| 2009 | $1,567,233,679 | 394,431,957 | 394,431,957 |
| 2010 | $1,942,216,480 | 406,239,896 | 406,239,896 |
| 2011 | $2,205,406,001 | 452,040,210 | 452,040,210 |
Note: Quantity represents Weight in kilograms
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