Fossil fuel comprises coal, oil, petroleum, and natural gas products.
| तिथि | मान | बदले , % |
|---|---|---|
| 2015 | 79.9 | 1.73% |
| 2014 | 78.6 | -1.72% |
| 2013 | 80.0 | -2.72% |
| 2012 | 82.2 | -2.68% |
| 2011 | 84.5 | -0.19% |
| 2010 | 84.6 | -0.26% |
| 2009 | 84.9 | -2.29% |
| 2008 | 86.8 | -1.52% |
| 2007 | 88.2 | -1.13% |
| 2006 | 89.2 | -0.68% |
| 2005 | 89.8 | -0.67% |
| 2004 | 90.4 |