Year	% of total final energy consumption
1990	33.9
1991	33.1
1992	32.8
1993	31.5
1994	31.1
1995	29.4
1996	30.5
1997	30
1998	29.5
1999	30.3
2000	29.6
2001	28.4
2002	27
2003	23.9
2004	20.2
2005	17.4
2006	16.4
2007	14.9
2008	14.1
2009	13.4
2010	12.3
2011	11.3
2012	11.5
2013	11.5
2014	11.9
2015	12.2
2016	12.6
2017	13.1
2018	13.5
2019	14.3
2020	14.9
2021	15.2