Year	% of total final energy consumption
1990	2.2
1991	2.1
1992	2.3
1993	4.1
1994	4.7
1995	4.2
1996	3.9
1997	3.9
1998	3.6
1999	3.8
2000	3.7
2001	6
2002	5.5
2003	5.3
2004	6.2
2005	6.3
2006	6.6
2007	8.2
2008	7.6
2009	10
2010	10.3
2011	10.4
2012	10.5
2013	10.7
2014	12.2
2015	13.4
2016	13.1
2017	12.4
2018	12.4
2019	17.6
2020	17.6
2021	17.9