Fossil fuel comprises coal, oil, petroleum, and natural gas products.
| तिथि | मान | बदले , % |
|---|---|---|
| 2014 | 87.7 | -0.64% |
| 2013 | 88.2 | -0.21% |
| 2012 | 88.4 | -0.54% |
| 2011 | 88.9 | 0.73% |
| 2010 | 88.3 | 0.71% |
| 2009 | 87.6 | 0.47% |
| 2008 | 87.2 | -0.21% |
| 2007 | 87.4 | 0.67% |
| 2006 | 86.8 | 1.11% |
| 2005 | 85.9 | 1.27% |
| 2004 | 84.8 | 1.88% |
| 2003 | 83.2 |