Fossil fuel comprises coal, oil, petroleum, and natural gas products.
| तिथि | मान | बदले , % |
|---|---|---|
| 2015 | 81.0 | -1.66% |
| 2014 | 82.4 | -2.10% |
| 2013 | 84.2 | 1.13% |
| 2012 | 83.2 | 0.58% |
| 2011 | 82.7 | -0.15% |
| 2010 | 82.9 | 1.49% |
| 2009 | 81.7 | 0.60% |
| 2008 | 81.2 | -0.79% |
| 2007 | 81.8 | 1.58% |
| 2006 | 80.5 | -0.08% |
| 2005 | 80.6 | -2.27% |
| 2004 | 82.5 |