Year	% of total final energy consumption
1990	24.5
1991	24
1992	25.1
1993	26
1994	25.1
1995	27.3
1996	26.9
1997	28.8
1998	30.5
1999	30.2
2000	31.7
2001	29.2
2002	29.5
2003	28.4
2004	31.1
2005	31.5
2006	31.2
2007	31.8
2008	34.6
2009	32.5
2010	33.4
2011	35.1
2012	38.7
2013	38.5
2014	41.2
2015	43.2
2016	42.4
2017	44.4
2018	44.2
2019	45.4
2020	47.3
2021	50.2