Year	% of total final energy consumption
1990	2.4
1991	2.1
1992	2.2
1993	2.2
1994	2
1995	1.8
1996	1.6
1997	1.7
1998	1.6
1999	1.8
2000	2
2001	2.1
2002	1.6
2003	1.9
2004	2.6
2005	2.1
2006	1.8
2007	1.5
2008	1.2
2009	0.9
2010	1.4
2011	1.6
2012	2
2013	3.1
2014	2.7
2015	0.6
2016	1.3
2017	1.1
2018	0.9
2019	1
2020	1.1
2021	1.1