Year	% of total final energy consumption
1990	8
1991	8.2
1992	7.5
1993	8.6
1994	8.3
1995	8.2
1996	8.9
1997	9.1
1998	8.6
1999	8.5
2000	8.4
2001	8.4
2002	8.7
2003	7.2
2004	6.7
2005	6.7
2006	6.8
2007	7
2008	6.8
2009	7.1
2010	8.2
2011	8.3
2012	8.3
2013	9.2
2014	9.3
2015	9.4
2016	9.6
2017	9.9
2018	9.8
2019	10.3
2020	11.2
2021	12.3