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 | 20,0 | -7,52 % |
| 2014 | 21,6 | 3,78 % |
| 2013 | 20,8 | 11,00 % |
| 2012 | 18,7 | 7,82 % |
| 2011 | 17,4 | -5,37 % |
| 2010 | 18,4 | 22,67 % |
| 2009 | 15,0 | 5,08 % |
| 2008 | 14,3 | 10,25 % |
| 2007 | 12,9 | -5,67 % |
| 2006 | 13,7 | 8,00 % |
| 2005 | 12,7 | -12,24 % |
| 2004 | 14,5 |