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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $800,030,435 | 1,039,625,152 | 1,039,625,152 |
| 2006 | $1,502,884,272 | 1,100,338,456 | 1,100,338,456 |
| 2007 | $1,609,225,518 | 1,001,284,506 | 1,001,284,506 |
| 2008 | $1,876,933,373 | 1,122,090,374 | 1,122,090,374 |
| 2009 | $1,250,034,643 | 1,184,678,705 | 1,184,678,705 |
| 2010 | $2,400,127,671 | 1,229,148,068 | 1,229,148,068 |
Note: Quantity represents Weight in kilograms
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