Year kWh 1971 0 1972 0 1973 0 1974 0 1975 166000000 1976 532000000 1977 521000000 1978 600000000 1979 479000000 1980 492000000 1981 797000000 1982 892000000 1983 671000000 1984 680000000 1985 422000000 1986 373000000 1987 435000000 1988 430000000 1989 441000000 1990 419000000 1991 425000000 1992 391000000 1993 380000000 1994 407000000 1995 443000000 1996 431000000 1997 486000000 1998 451000000 1999 598000000 2000 786000000 2001 966000000 2002 993000000 2003 1067000000 2004 1072000000 2005 1140000000 2006 1283000000 2007 1527000000 2008 1693000000 2009 1756000000 2010 1808000000 2011 1817000000 2012 1910000000 2013 2001000000 2014 1997000000 2015 2110000000