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
2006	0
2007	0
2008	0
2009	0
2010	2.63279445727483
2011	2.47191011235955
2012	3.58126721763085
2013	4.09090909090909
2014	4.65431540894713
2015	4.5716822015091