Year	% of total final energy consumption
1990	15.4
1991	11.6
1992	13.2
1993	12.3
1994	10.5
1995	9.1
1996	9
1997	8.8
1998	7.2
1999	6.5
2000	8.5
2001	6.2
2002	6.1
2003	5.6
2004	5.9
2005	5.8
2006	5.3
2007	4.7
2008	5.3
2009	4.1
2010	5.1
2011	6.1
2012	5
2013	5.4
2014	3.3
2015	4.3
2016	4.1
2017	5.3
2018	4.9
2019	5.4
2020	5.2
2021	5
2022	5.1