Year	% of total electricity output
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0
2004	0
2005	0.0228466986520448
2006	0.0214961306964746
2007	0.0615889960993636
2008	0.295333727111636
2009	0.594439117929051
2010	1.37166478767381
2011	3.6112801785352
2012	5.44837820648717
2013	7.62237762237762
2014	7.28735632183908
2015	8.78005735715861