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	0
1999	0
2000	0
2001	154000000
2002	152000000
2003	101000000
2004	26000000
2005	38000000
2006	404000000
2007	483000000
2008	524000000
2009	543000000
2010	685000000
2011	1221000000
2012	1371000000
2013	1505000000
2014	2020000000
2015	2174000000