Year	% of total final energy consumption
1990	2.1
1991	2.3
1992	6.7
1993	12.9
1994	17.8
1995	9.3
1996	12.5
1997	10.1
1998	9.4
1999	8.4
2000	7.2
2001	5.4
2002	8.9
2003	9.8
2004	8.7
2005	6.5
2006	7.7
2007	7
2008	6.4
2009	7.8
2010	9.4
2011	8
2012	6.6
2013	6.8
2014	7.1
2015	10.7
2016	13.2
2017	12.6
2018	11.1
2019	10.3
2020	8.4
2021	9.1