Year	% of total final energy consumption
1990	1.7
1991	1.7
1992	2
1993	2
1994	2.8
1995	4
1996	3.1
1997	4.4
1998	6.7
1999	5.9
2000	6.8
2001	3.4
2002	1.3
2003	1.3
2004	1.4
2005	1.9
2006	2.1
2007	3.6
2008	4
2009	3.7
2010	3.7
2011	3.8
2012	4.2
2013	5.7
2014	6.8
2015	9.1
2016	13.5
2017	15.3
2018	16
2019	16.4
2020	20.8
2021	20.5