Year	% of total final energy consumption
1990	43
1991	40.7
1992	39.7
1993	39.9
1994	37.8
1995	34.8
1996	36.8
1997	36.5
1998	31.4
1999	33.7
2000	27.7
2001	24
2002	28.7
2003	27.4
2004	28.2
2005	22.8
2006	22.1
2007	22.8
2008	23.4
2009	20.4
2010	20.6
2011	19.7
2012	21.2
2013	20.7
2014	19.8
2015	22
2016	22.1
2017	23.6
2018	24.5
2019	19
2020	28.5
2021	28