Year	% of total final energy consumption
1990	34
1991	37.3
1992	38.6
1993	35.8
1994	34.8
1995	34.2
1996	32.2
1997	30
1998	29.8
1999	29.1
2000	31.4
2001	32.1
2002	33.1
2003	31.6
2004	31.4
2005	32.3
2006	32.9
2007	30.5
2008	30.8
2009	31.5
2010	27
2011	28.8
2012	30.3
2013	30.2
2014	27
2015	25.1
2016	24.6
2017	24.1
2018	25.5
2019	25.3
2020	26.7
2021	24.2