Fossil fuel comprises coal, oil, petroleum, and natural gas products.
| तिथि | मान | बदले , % |
|---|---|---|
| 2014 | 99.1 | -0.07% |
| 2013 | 99.2 | 0.11% |
| 2012 | 99.1 | 0.18% |
| 2011 | 98.9 | -0.38% |
| 2010 | 99.3 | 0.08% |
| 2009 | 99.2 | 0.05% |
| 2008 | 99.2 | 0.06% |
| 2007 | 99.1 | -0.05% |
| 2006 | 99.1 | 0.01% |
| 2005 | 99.1 | -0.04% |
| 2004 | 99.2 | 0.01% |
| 2003 | 99.2 |