Year	% of total final energy consumption
1990	21.6
1991	32.7
1992	29.8
1993	29.9
1994	30.1
1995	30.3
1996	32.6
1997	29.1
1998	28.1
1999	27.8
2000	26.8
2001	26.9
2002	24.6
2003	24.8
2004	26.6
2005	26.8
2006	25.5
2007	22.7
2008	24.1
2009	27.2
2010	29.8
2011	27.2
2012	29.4
2013	32.8
2014	33.6
2015	33.1
2016	31.8
2017	29.8
2018	32.8
2019	31.6
2020	32.4
2021	34.1