Fossil fuel comprises coal, oil, petroleum, and natural gas products.
| Data | Valor | Modificar, % |
|---|---|---|
| 2015 | 78,9 | -1,06% |
| 2014 | 79,7 | -1,70% |
| 2013 | 81,1 | 0,57% |
| 2012 | 80,6 | 0,32% |
| 2011 | 80,4 | 1,02% |
| 2010 | 79,6 | -0,51% |
| 2009 | 80,0 | -1,03% |
| 2008 | 80,8 | -0,58% |
| 2007 | 81,3 | 0,00% |
| 2006 | 81,3 | -0,71% |
| 2005 | 81,9 | -0,86% |
| 2004 | 82,6 |