Fossil fuel comprises coal, oil, petroleum, and natural gas products.
| तिथि | मान | बदले , % |
|---|---|---|
| 2015 | 86.8 | -3.02% |
| 2014 | 89.5 | 1.57% |
| 2013 | 88.2 | -1.40% |
| 2012 | 89.4 | -0.62% |
| 2011 | 90.0 | 0.95% |
| 2010 | 89.1 | -0.86% |
| 2009 | 89.9 | -0.73% |
| 2008 | 90.6 | 0.07% |
| 2007 | 90.5 | 1.68% |
| 2006 | 89.0 | 1.07% |
| 2005 | 88.1 | 1.57% |
| 2004 | 86.7 |