Year	% of total final energy consumption
1991	42.5
1992	40.3
1993	38
1994	32.8
1995	32.1
1996	31.4
1997	30.6
1998	31.7
1999	32.7
2000	34.8
2001	30.4
2002	33.8
2003	33.3
2004	34.8
2005	34.6
2006	35.8
2007	36.5
2008	32.5
2009	33.4
2010	31.2
2011	31.6
2012	31.9
2013	30.7
2014	30.2
2015	29.3
2016	29.2
2017	30.2
2018	30.9
2019	30.2
2020	31.2
2021	30