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	116000000
1974	108000000
1975	83000000
1976	57000000
1977	247000000
1978	260000000
1979	315000000
1980	300000000
1981	291000000
1982	46000000
1983	22000000
1984	24000000
1985	53000000
1986	119000000
1987	148000000
1988	188000000
1989	198000000
1990	289000000
1991	307000000
1992	276000000
1993	253000000
1994	254000000
1995	330000000
1996	322000000
1997	283000000
1998	370000000
1999	509000000
2000	584000000
2001	634000000
2002	778000000
2003	945000000
2004	1180000000
2005	1818000000
2006	2593000000
2007	3097000000
2008	4008000000
2009	5111000000
2010	6182000000
2011	8181000000
2012	10101000000
2013	11295000000
2014	11921000000
2015	14148000000