Year	% of total final energy consumption
1990	37
1991	38.1
1992	36.9
1993	36.9
1994	35.2
1995	33.2
1996	32.4
1997	32
1998	30.6
1999	30.8
2000	29.2
2001	29
2002	28.1
2003	27
2004	25.8
2005	24.6
2006	23.7
2007	22.1
2008	21.3
2009	20.6
2010	19.9
2011	18.1
2012	17.4
2013	16
2014	15
2015	14.2
2016	13.6
2017	14.3
2018	14.3
2019	13.5
2020	16.9
2021	12.8