Year	% of total final energy consumption
1990	53
1991	52
1992	51.5
1993	51.5
1994	50.5
1995	49.5
1996	49.1
1997	47.9
1998	48
1999	47.1
2000	46.9
2001	47.1
2002	45.8
2003	45.6
2004	44.9
2005	44.2
2006	43.2
2007	41.5
2008	39.4
2009	37.4
2010	36.2
2011	35
2012	34.8
2013	34.9
2014	33.9
2015	33.4
2016	33
2017	32.5
2018	32.9
2019	33.5
2020	36.1
2021	34.9