Year	kWh
1971	10000000
1972	10000000
1973	8000000
1974	12000000
1975	14000000
1976	16000000
1977	15000000
1978	16000000
1979	14000000
1980	18000000
1981	17000000
1982	18000000
1983	87000000
1984	294000000
1985	322000000
1986	278000000
1987	252000000
1988	282000000
1989	471000000
1990	491000000
1991	571000000
1992	578000000
1993	506000000
1994	463000000
1995	436000000
1996	436000000
1997	447000000
1998	335000000
1999	200000000
2000	293000000
2001	302000000
2002	341000000
2003	453000000
2004	489000000
2005	623000000
2006	634000000
2007	624000000
2008	660000000
2009	770000000
2010	850000000
2011	856000000
2012	1307000000
2013	1723000000
2014	2000000000
2015	1997000000