Year	kWh
1971	67000000
1972	72000000
1973	70000000
1974	75000000
1975	80000000
1976	86000000
1977	86000000
1978	85000000
1979	88000000
1980	102000000
1981	101000000
1982	104000000
1983	170000000
1984	374000000
1985	401000000
1986	364000000
1987	342000000
1988	377000000
1989	563000000
1990	584000000
1991	669000000
1992	664000000
1993	594000000
1994	552000000
1995	527000000
1996	530000000
1997	544000000
1998	461000000
1999	324000000
2000	407000000
2001	430000000
2002	497000000
2003	603000000
2004	751000000
2005	977000000
2006	1658000000
2007	1114000000
2008	1219000000
2009	1294000000
2010	1387000000
2011	2026000000
2012	2886000000
2013	3442000000
2014	3893000000
2015	4743000000