Fossil fuel comprises coal, oil, petroleum, and natural gas products.
| तिथि | मान | बदले , % |
|---|---|---|
| 2015 | 82.4 | -0.80% |
| 2014 | 83.1 | 0.18% |
| 2013 | 82.9 | -0.60% |
| 2012 | 83.4 | -0.33% |
| 2011 | 83.7 | -0.52% |
| 2010 | 84.2 | 0.00% |
| 2009 | 84.2 | -0.96% |
| 2008 | 85.0 | -0.76% |
| 2007 | 85.6 | -0.01% |
| 2006 | 85.6 | -0.46% |
| 2005 | 86.0 | -0.12% |
| 2004 | 86.1 |