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 | 9,2 | 5,81 % |
| 2013 | 8,7 | -2,63 % |
| 2012 | 8,9 | 5,87 % |
| 2011 | 8,4 | -0,84 % |
| 2010 | 8,5 | -0,62 % |
| 2009 | 8,5 | -7,42 % |
| 2008 | 9,2 | 5,77 % |
| 2007 | 8,7 | -4,11 % |
| 2006 | 9,1 | -1,04 % |
| 2005 | 9,2 | 2,20 % |
| 2004 | 9,0 | 21,04 % |
| 2003 | 7,4 |