Year	% of total electricity output
1990	0.791602133884013
1991	1.82421227197347
1992	1.04792726151949
1993	0.966037735849057
1994	0.567536889897843
1995	0.508540878862955
1996	0.845212564652454
1997	0.518684427678887
1998	0.792515134837644
1999	0.900270081024307
2000	0.821064552661382
2001	0.684691011235955
2002	0.793851870619036
2003	1.76262178919398
2004	1.65829145728643
2005	1.47697654213727
2006	0.995329607227624
2007	0.669626610379212
2008	0.480401030425399
2009	1.1539470233412
2010	1.16051795748839
2011	1.00018185124568
2012	1.72194230662754
2013	2.33393177737881
2014	3.06202155913139
2015	2.83594226468794