Year	% of total electricity output
1990	6.87285223367698
1991	10.5263157894737
1992	14.0350877192982
1993	15.625
1994	18.1818181818182
1995	20.5882352941176
1996	22.5806451612903
1997	25.9259259259259
1998	20.5882352941176
1999	17.5
2000	13.9165009940358
2001	41.9354838709677
2002	41.9354838709677
2003	39.3939393939394
2004	31.9672131147541
2005	24.5283018867925
2006	19.5979899497487
2007	15.0579150579151
2008	12.2257053291536
2009	10.8635097493036
2010	3.41463414634146
2011	3.41463414634146
2012	3.41463414634146
2013	4.34782608695652
2014	57.8274760383387
2015	57.8274760383387