Year	kWh
1971	59000000
1972	60000000
1973	58000000
1974	63000000
1975	65000000
1976	67000000
1977	67000000
1978	68000000
1979	66000000
1980	70000000
1981	69000000
1982	72000000
1983	141000000
1984	348000000
1985	379000000
1986	340000000
1987	311000000
1988	341000000
1989	530000000
1990	552000000
1991	632000000
1992	623000000
1993	551000000
1994	508000000
1995	482000000
1996	483000000
1997	496000000
1998	411000000
1999	272000000
2000	354000000
2001	377000000
2002	444000000
2003	557000000
2004	711000000
2005	936000000
2006	972000000
2007	984000000
2008	1064000000
2009	1123000000
2010	1233000000
2011	1866000000
2012	2724000000
2013	3470000000
2014	3798000000
2015	4660000000