Year	kWh
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	26000000
1999	20000000
2000	5000000
2001	1000000
2002	0
2003	0
2004	0
2005	0
2006	0
2007	0
2008	14000000
2009	24000000
2010	18000000
2011	37000000
2012	192000000
2013	356000000
2014	499000000
2015	759000000