Year	% of total final energy consumption
1990	1.8
1991	2.2
1992	2.6
1993	2.4
1994	2.3
1995	3
1996	3.5
1997	3.8
1998	5.8
1999	6.6
2000	8
2001	7.2
2002	8.7
2003	9.2
2004	9.6
2005	9.8
2006	10
2007	8.8
2008	9.9
2009	11.6
2010	14.3
2011	13.2
2012	15.6
2013	18.2
2014	17.1
2015	17.9
2016	17.7
2017	17.1
2018	19.6
2019	19.3
2020	21.1
2021	20.4