Year	% of total final energy consumption
1990	3.4
1991	5
1992	5.6
1993	7.2
1994	7.6
1995	8.6
1996	11.9
1997	15.8
1998	16.3
1999	17.7
2000	16.4
2001	13.4
2002	14.4
2003	15.7
2004	17.3
2005	18.5
2006	17.4
2007	18.2
2008	20.4
2009	22.1
2010	24.1
2011	21.1
2012	21.5
2013	23.1
2014	24.3
2015	23.7
2016	24.4
2017	23.4
2018	23
2019	23.5
2020	24.1
2021	23.6