Year	kWh
1971	66000000
1972	57000000
1973	51000000
1974	46000000
1975	51000000
1976	73000000
1977	80000000
1978	91000000
1979	94000000
1980	105000000
1981	110000000
1982	137000000
1983	208000000
1984	201000000
1985	195000000
1986	280000000
1987	271000000
1988	327000000
1989	321000000
1990	963000000
1991	1033000000
1992	1743000000
1993	1750000000
1994	1786000000
1995	1879000000
1996	1738000000
1997	1743000000
1998	1161000000
1999	1010000000
2000	941000000
2001	2075000000
2002	1951000000
2003	1814000000
2004	2038000000
2005	1797000000
2006	1438000000
2007	2705000000
2008	3121000000
2009	4353000000
2010	2579000000
2011	5011000000
2012	5263000000
2013	6323000000
2014	7250000000
2015	8991000000