Year	kWh
1971	8000000
1972	12000000
1973	12000000
1974	12000000
1975	15000000
1976	19000000
1977	19000000
1978	17000000
1979	22000000
1980	32000000
1981	32000000
1982	32000000
1983	29000000
1984	26000000
1985	22000000
1986	24000000
1987	31000000
1988	36000000
1989	33000000
1990	32000000
1991	37000000
1992	41000000
1993	43000000
1994	44000000
1995	45000000
1996	47000000
1997	48000000
1998	50000000
1999	52000000
2000	54000000
2001	54000000
2002	54000000
2003	54000000
2004	54000000
2005	56000000
2006	60000000
2007	72000000
2008	97000000
2009	121000000
2010	119000000
2011	122000000
2012	123000000
2013	60000000
2014	201000000
2015	215000000