Year	% of total final energy consumption
1990	75.9
1991	75.5
1992	74.5
1993	70.6
1994	67.8
1995	64.9
1996	62.6
1997	60.5
1998	59.2
1999	59.3
2000	57.7
2001	56.1
2002	52.2
2003	50.8
2004	45.8
2005	44.1
2006	44.2
2007	41.9
2008	39.3
2009	37
2010	34.6
2011	36.3
2012	37.9
2013	37.4
2014	36.7
2015	27.8
2016	26.8
2017	28.3
2018	24.3
2019	20.4
2020	18.9
2021	24.2