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	24000000
2000	137000000
2001	221000000
2002	204000000
2003	368000000
2004	523000000
2005	552000000
2006	616000000
2007	831000000
2008	913000000
2009	1133000000
2010	1704000000
2011	1747000000
2012	1497000000
2013	1574000000
2014	1691000000
2015	1598000000