Fossil fuel comprises coal, oil, petroleum, and natural gas products.
| Data | Valor | Modificar, % |
|---|---|---|
| 2014 | 86,1 | -8,00% |
| 2013 | 93,6 | 3,90% |
| 2012 | 90,1 | -1,71% |
| 2011 | 91,7 | -8,26% |
| 2008 | 99,9 | 0,00% |
| 2007 | 99,9 | 0,00% |
| 2006 | 99,9 | -0,01% |
| 2005 | 99,9 | 0,00% |
| 2004 | 99,9 | -0,02% |
| 2003 | 100,0 | 0,00% |
| 2002 | 100,0 | 0,00% |
| 2001 | 100,0 |