Fossil fuel comprises coal, oil, petroleum, and natural gas products.
| Data | Valor | Modificar, % |
|---|---|---|
| 2014 | 48,3 | 3,86% |
| 2013 | 46,5 | -3,13% |
| 2012 | 48,0 | 9,49% |
| 2011 | 43,8 | 1,99% |
| 2010 | 43,0 | 2,85% |
| 2009 | 41,8 | 10,11% |
| 2008 | 38,0 | 9,26% |
| 2007 | 34,7 | 9,69% |
| 2006 | 31,7 | 16,95% |
| 2005 | 27,1 | -14,19% |
| 2004 | 31,6 | -0,50% |
| 2003 | 31,7 |