Year	% of total final energy consumption
1990	34.1
1991	32.5
1992	33.2
1993	34.4
1994	31.4
1995	33.9
1996	31.4
1997	35.5
1998	35.5
1999	34.6
2000	39.8
2001	37.4
2002	35.9
2003	34.6
2004	35.5
2005	39.3
2006	40.1
2007	41.8
2008	43.2
2009	45.7
2010	44.7
2011	45.4
2012	48.3
2013	47.3
2014	48.6
2015	51.9
2016	50.9
2017	51.8
2018	51.6
2019	52.9
2020	57.8
2021	57.9