Year	% of total electricity output
1990	0
1991	0
1992	0
1993	2.85714285714286
1994	6.80100755667506
1995	7.56302521008403
1996	8.05902383654938
1997	7.72532188841202
1998	7.48031496062992
1999	6.65075034106412
2000	5.39543778172381
2001	3.88919131434101
2002	3.10732912434806
2003	2.68970698722765
2004	2.92525362813339
2005	2.72083016957732
2006	2.95308406763515
2007	2.54888138611657
2008	1.92119944211994
2009	1.50570293062781
2010	1.18257859821171
2011	6.7226660829594
2012	18.3667484270022
2013	20.5576033446305
2014	17.2916513783909
2015	20.2084965923393