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 | 18,5 | -3,14 % |
| 2014 | 19,0 | -0,19 % |
| 2013 | 19,1 | 2,53 % |
| 2012 | 18,6 | 7,32 % |
| 2011 | 17,3 | 3,15 % |
| 2010 | 16,8 | -0,84 % |
| 2009 | 17,0 | 11,26 % |
| 2008 | 15,2 | 2,43 % |
| 2007 | 14,9 | 11,38 % |
| 2006 | 13,4 | -1,61 % |
| 2005 | 13,6 | 9,51 % |
| 2004 | 12,4 |