Fossil fuel comprises coal, oil, petroleum, and natural gas products.
| तिथि | मान | बदले , % |
|---|---|---|
| 2014 | 66.1 | 1.26% |
| 2013 | 65.3 | -0.12% |
| 2012 | 65.3 | 0.07% |
| 2011 | 65.3 | -2.76% |
| 2010 | 67.2 | 2.49% |
| 2009 | 65.5 | 2.69% |
| 2008 | 63.8 | -1.20% |
| 2007 | 64.6 | -0.91% |
| 2006 | 65.2 | 0.28% |
| 2005 | 65.0 | 1.06% |
| 2004 | 64.3 | 3.00% |
| 2003 | 62.4 |