Year	% of total final energy consumption
1990	2.4
1991	4.4
1992	16
1993	14.8
1994	16.6
1995	17.8
1996	14.2
1997	15.9
1998	15.1
1999	17.7
2000	19.4
2001	15.2
2002	14.6
2003	17.3
2004	18.2
2005	19
2006	19.8
2007	15.7
2008	15.6
2009	18.4
2010	22.3
2011	18.6
2012	18.3
2013	21.2
2014	21.2
2015	23.9
2016	21.4
2017	19
2018	20.9
2019	17
2020	20
2021	19.5