Fossil fuel comprises coal, oil, petroleum, and natural gas products.
| Data | Valor | Modificar, % |
|---|---|---|
| 2014 | 86,8 | 0,25% |
| 2013 | 86,6 | -0,67% |
| 2012 | 87,2 | 0,13% |
| 2011 | 87,0 | -0,48% |
| 2010 | 87,5 | -0,24% |
| 2009 | 87,7 | -0,54% |
| 2008 | 88,1 | 0,49% |
| 2007 | 87,7 | 0,69% |
| 2006 | 87,1 | -0,05% |
| 2005 | 87,2 | 0,19% |
| 2004 | 87,0 | 1,13% |
| 2003 | 86,0 |