Clean energy is noncarbohydrate energy that does not produce carbon dioxide when generated. It includes hydropower and nuclear, geothermal, and solar power, among others.
| Fecha | Valor | Cambiar , % |
|---|---|---|
| 2014 | 22,5 | 14,88 % |
| 2013 | 19,6 | -1,22 % |
| 2012 | 19,9 | 3,17 % |
| 2011 | 19,2 | 5,34 % |
| 2010 | 18,3 | -6,88 % |
| 2009 | 19,6 | 8,88 % |
| 2008 | 18,0 | 0,94 % |
| 2007 | 17,9 | 1,07 % |
| 2006 | 17,7 | 5,88 % |
| 2005 | 16,7 | 2,79 % |
| 2004 | 16,2 | 8,08 % |
| 2003 | 15,0 |