Year	% of total final energy consumption
1990	27.6
1991	31.9
1992	37.3
1993	40.3
1994	43.5
1995	45.4
1996	44.3
1997	46.7
1998	49.3
1999	50.5
2000	49.5
2001	51.3
2002	53.3
2003	52.7
2004	55.4
2005	54.9
2006	55.3
2007	51.6
2008	52.1
2009	38.7
2010	38.1
2011	35.8
2012	39
2013	40.9
2014	31.5
2015	35.6
2016	33.1
2017	35.7
2018	29.7
2019	31.6
2020	26
2021	24.6
2022	25