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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $535,961,636 | 2,786,663,976 | 2,786,663,976 |
| 2006 | $377,606,961 | 1,951,791,008 | 1,951,791,008 |
| 2007 | $740,320,699 | 3,090,483,000 | 3,090,483,000 |
| 2008 | $938,171,917 | 6,965,859,976 | 6,965,859,976 |
| 2009 | $251,323,112 | 1,164,388,000 | 1,164,388,000 |
| 2010 | $497,285,094 | 2,166,446,016 | 2,166,446,016 |
| 2011 | $1,111,918,423 | 3,433,061,000 | 3,433,061,000 |
Note: Quantity represents Weight in kilograms
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