Year	% of total final energy consumption
1990	10.5
1991	11.1
1992	11.3
1993	10.9
1994	11
1995	10.7
1996	10.5
1997	10
1998	9.7
1999	9.8
2000	9.3
2001	9.4
2002	8.7
2003	8.8
2004	8.9
2005	8.6
2006	8.5
2007	9.4
2008	10.5
2009	11.2
2010	11.9
2011	10.6
2012	12.3
2013	13.4
2014	13.2
2015	13.3
2016	14.2
2017	14.1
2018	15.2
2019	15.5
2020	16.8
2021	16.2