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 , % |
|---|---|---|
| 2015 | 39,9 | -5,98 % |
| 2014 | 42,4 | 9,15 % |
| 2013 | 38,9 | -2,60 % |
| 2012 | 39,9 | -0,94 % |
| 2011 | 40,3 | 2,15 % |
| 2010 | 39,4 | 1,77 % |
| 2009 | 38,7 | -0,83 % |
| 2008 | 39,1 | -3,12 % |
| 2007 | 40,3 | 7,09 % |
| 2006 | 37,7 | 6,21 % |
| 2005 | 35,5 | -7,42 % |
| 2004 | 38,3 |