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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $616,895,543 | 138,875,287 | 138,875,287 |
| 2006 | $741,189,578 | 265,534,620 | 265,534,620 |
| 2007 | $1,035,066,687 | 218,256,150 | 218,256,150 |
| 2008 | $1,001,090,329 | 191,750,255 | 191,750,255 |
| 2009 | $459,126,008 | 71,638,236 | 71,638,236 |
| 2010 | $608,399,215 | 125,270,496 | 125,270,496 |
| 2011 | $885,018,103 | 182,801,769 | 182,801,769 |
Note: Quantity represents Weight in kilograms
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