Year	% of total final energy consumption
1990	3.5
1991	3.6
1992	5.9
1993	6.6
1994	11.1
1995	17.9
1996	20.1
1997	20
1998	17.9
1999	20
2000	19.8
2001	18.9
2002	19.3
2003	19.9
2004	20
2005	18.9
2006	17.2
2007	18.6
2008	20.5
2009	24.2
2010	25.3
2011	25.2
2012	25
2013	24.5
2014	25.3
2015	28.2
2016	27.2
2017	27.5
2018	28.6
2019	31.3
2020	40.4
2021	38