Year	% of total final energy consumption
1990	0.3
1991	0.2
1992	0.2
1993	0.2
1994	0.2
1995	0.2
1996	0.2
1997	0.2
1998	0.2
1999	0.2
2000	0.2
2001	0.2
2002	0.2
2003	0.2
2004	0.2
2005	0.2
2006	0.2
2007	0.2
2008	0.2
2009	0.3
2010	5.5
2011	5.7
2012	6.9
2013	6.9
2014	6.9
2015	6.7
2016	7
2017	6.8
2018	8.6
2019	8.3
2020	9.1
2021	8.8
2022	8.8