Year	% of total final energy consumption
1990	11.3
1991	8.5
1992	8
1993	5.4
1994	5.3
1995	4.4
1996	5
1997	4.4
1998	5.5
1999	4.3
2000	4.9
2001	4.6
2002	5.7
2003	7
2004	6.1
2005	6.4
2006	6.4
2007	7.3
2008	5.1
2009	4.3
2010	5.7
2011	6.2
2012	5.6
2013	5.9
2014	4.2
2015	4.2
2016	4
2017	4
2018	4.7
2019	5.1
2020	6.3
2021	6.8