Year	kWh
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	269000000
1974	100000000
1975	100000000
1976	200000000
1977	300000000
1978	600000000
1979	900000000
1980	900000000
1981	896000000
1982	9892000000
1983	11031000000
1984	12094000000
1985	12700000000
1986	13804000000
1987	14811000000
1988	15987000000
1989	17048000000
1990	11312000000
1991	11598000000
1992	11627000000
1993	11369000000
1994	12215000000
1995	13993000000
1996	14563000000
1997	15040000000
1998	13757000000
1999	14137000000
2000	13953000000
2001	13811000000
2002	14537000000
2003	15815000000
2004	16832000000
2005	18477000000
2006	19287000000
2007	20590000000
2008	20334000000
2009	20814000000
2010	37857000000
2011	39959000000
2012	42796000000
2013	51223000000
2014	66421000000
2015	80292000000