| 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | Year |
| 4982 | 4656 | 4351 | 4066 | 3800 | 3552 | 3319 | 3102.6 | PD (MW) |
| - | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | Year |
| - | 8000 | 7477 | 6987 | 6530 | 6103 | 5704 | 5331 | PD (MW) |