Year	% of energy use
1971	-502.8532513501167
1972	-569.3203757359341
1973	-499.0932301172136
1974	-609.5970932959466
1975	-819.7882873482939
1976	-851.7125467946796
1977	-771.6974074922156
1978	-624.3369609290106
1979	-699.2240983175237
1980	-587.0535376411068
1981	-441.2691680091731
1982	-441.22647191498265
1983	-427.11101147490587
1984	-471.5918077096551
1985	-593.6415224343536
1986	-569.6275729507094
1987	-566.7217070214068
1988	-542.2287174935913
1989	-778.9561646489715
1990	-1138.3751550061156
1991	-1205.9637690069264
1992	-1116.3570834275897
1993	-1119.4939011574393
1994	-1411.4264596224539
1995	-1373.825545389678
1996	-1325.976838986346
1997	-1324.8158160537103
1998	-1174.3341483249226
1999	-1077.2974283830815
2000	-929.5684363629441
2001	-813.9141440215068
2002	-657.9006029312217
2003	-603.5096615004461
2004	-518.4997284694755
2005	-440.45599306984815
2006	-348.46401855922693
2007	-317.8892856041948
2008	-281.4314137133401
2009	-258.7818407596205
2010	-235.33713284096103
2011	-292.20822697614227
2012	-332.6096152223464
2013	-205.164809242153
2014	-213.40051953087746