Year	% of total final energy consumption
1990	25.5
1991	33
1992	46.8
1993	51.1
1994	51.4
1995	50.6
1996	51.6
1997	55.9
1998	49.9
1999	42.6
2000	41.4
2001	39
2002	35.8
2003	33.7
2004	35.8
2005	36.8
2006	31.6
2007	32
2008	35.8
2009	37.1
2010	37
2011	35.8
2012	39.9
2013	41.1
2014	38.6
2015	38.5
2016	39.4
2017	36.9
2018	37.8
2019	40.1
2020	44.4
2021	41.9