Year	% of total electricity output
1990	60.126582278481
1991	68.1978798586572
1992	76.6467065868264
1993	79.5847750865052
1994	59.919028340081
1995	82.5242718446602
1996	79.8319327731092
1997	64.5833333333333
1998	57.1428571428571
1999	48.1308411214953
2000	57.1428571428571
2001	40.650406504065
2002	57.2368421052632
2003	70.4545454545455
2004	44.6236559139785
2005	40.2116402116402
2006	42.5339366515837
2007	52.0408163265306
2008	75.609756097561
2009	75
2010	54.1899441340782
2011	86.71875
2012	84.6846846846847
2013	81.7204301075269
2014	86.2068965517241
2015	75.3086419753086