Fossil fuel comprises coal, oil, petroleum, and natural gas products.
| Data | Valor | Modificar, % |
|---|---|---|
| 2014 | 76,7 | -0,10% |
| 2013 | 76,8 | 1,60% |
| 2012 | 75,5 | -0,22% |
| 2011 | 75,7 | -1,60% |
| 2010 | 77,0 | -0,46% |
| 2009 | 77,3 | 3,11% |
| 2008 | 75,0 | 0,76% |
| 2007 | 74,4 | -1,15% |
| 2006 | 75,3 | -0,85% |
| 2005 | 75,9 | 1,33% |
| 2004 | 74,9 | 1,29% |
| 2003 | 74,0 |