Year	% of total final energy consumption
1990	25.2
1991	24.5
1992	26.2
1993	26.4
1994	25.7
1995	25.7
1996	24.1
1997	24.9
1998	24.5
1999	26.5
2000	26.4
2001	25.5
2002	24.7
2003	22.6
2004	23.2
2005	24.4
2006	26.6
2007	29
2008	29.7
2009	31.3
2010	31.1
2011	31.6
2012	34.4
2013	34.6
2014	35.7
2015	34.8
2016	34.6
2017	34
2018	34.1
2019	34
2020	35.8
2021	36