Year	kWh
1971	2116000000
1972	2074000000
1973	2410000000
1974	2803000000
1975	3340000000
1976	3897000000
1977	4238000000
1978	4661000000
1979	5362000000
1980	5258000000
1981	5759000000
1982	6754000000
1983	7648000000
1984	7540000000
1985	7691000000
1986	9632000000
1987	11103000000
1988	11322000000
1989	11655000000
1990	13446000000
1991	15329000000
1992	18604000000
1993	18518000000
1994	18832000000
1995	19596000000
1996	20164000000
1997	20644000000
1998	20228000000
1999	21401000000
2000	21925000000
2001	24873000000
2002	26347000000
2003	28901000000
2004	30650000000
2005	33149000000
2006	33598000000
2007	40160000000
2008	41487000000
2009	46403000000
2010	58561000000
2011	62820000000
2012	72400000000
2013	83369000000
2014	100735000000
2015	121451000000