Year	% of total final energy consumption
1990	3.6
1991	4
1992	5.9
1993	5.8
1994	5.9
1995	5.3
1996	5.2
1997	5.7
1998	6
1999	6.5
2000	5.9
2001	6.3
2002	7.3
2003	6.7
2004	7.1
2005	7.5
2006	7.9
2007	8.3
2008	9
2009	10.2
2010	10.9
2011	12.2
2012	12.8
2013	13.9
2014	14.8
2015	14.8
2016	14.8
2017	14.5
2018	14.7
2019	15.9
2020	17
2021	17.2