Year	% of total electricity output
1990	10.2923758925248
1991	11.003337179927
1992	13.8767546158775
1993	12.8903994540969
1994	9.09279659981924
1995	8.57603464303786
1996	8.13496648948463
1997	7.08740346749859
1998	6.80429907987319
1999	4.41970310391363
2000	3.03784327134606
2001	3.91076901804438
2002	5.72862753995151
2003	7.2297534410377
2004	6.39475670688602
2005	9.08034230268182
2006	9.54474211394941
2007	8.88786485347033
2008	2.42343728149909
2009	3.36992365722546
2010	4.16339355852317
2011	5.12264009464616
2012	4.98552753700703
2013	5.70772079837216
2014	5.19538689554967
2015	5.10488787847473