Year	% of total electricity output
1990	20.9171334986378
1991	20.5570433851098
1992	23.8383157083323
1993	19.7753303964758
1994	15.6567623349819
1995	16.4630952984306
1996	15.5306833618806
1997	10.3394213890415
1998	15.7653963453702
1999	14.123261362975
2000	15.9560675060273
2001	17.474865190511
2002	14.9532883003595
2003	13.6385363003877
2004	13.6065178133036
2005	13.6055328591928
2006	12.2587772033185
2007	12.9038838981084
2008	13.3158324739161
2009	13.2330616046028
2010	15.8540249182646
2011	11.9928905172367
2012	11.2368144778283
2013	12.2701601703546
2014	11.4751004932507
2015	10.6511556345733
2016	12.0719582395239
2017	12.5605535137614
2018	17.0370007361396
2019	16.2466452115754