Year	kWh
1971	168000000
1972	176000000
1973	178000000
1974	187000000
1975	362000000
1976	739000000
1977	732000000
1978	818000000
1979	1340000000
1980	2811000000
1981	4158000000
1982	5110000000
1983	6137000000
1984	6793000000
1985	7135000000
1986	7087000000
1987	6946000000
1988	7557000000
1989	8244000000
1990	8584000000
1991	8444000000
1992	8413000000
1993	8326000000
1994	9801000000
1995	10362000000
1996	11291000000
1997	12403000000
1998	14065000000
1999	17219000000
2000	21488000000
2001	22973000000
2002	24160000000
2003	26253000000
2004	29357000000
2005	31812000000
2006	37837000000
2007	42169000000
2008	48532000000
2009	57081000000
2010	61622000000
2011	71215000000
2012	82640000000
2013	92138000000
2014	106175000000
2015	116913000000