Year	% of energy use
1971	-1481.6105912080782
1972	-1539.1923976145815
1973	-1585.900275254066
1974	-1463.6531692401522
1975	-1237.5429726614752
1976	-1291.0469160894704
1977	-1206.3852876526184
1978	-1024.3137316075517
1979	-970.3724364801217
1980	-795.3012461422607
1981	-570.3286854327894
1982	-376.90542092870845
1983	-307.4896042644154
1984	-307.03758846758774
1985	-256.9962652482019
1986	-302.5888189553309
1987	-275.80257718667485
1988	-296.3535496699789
1989	-300.5797128310733
1990	-331.8768053929988
1991	-317.1697681411521
1992	-308.6315176461899
1993	-300.61757024848237
1994	-282.0538573043698
1995	-279.41624148950297
1996	-270.32542411640173
1997	-276.43669055355355
1998	-291.77000116160974
1999	-282.5606310794675
2000	-296.4366458931747
2001	-267.7941442861807
2002	-238.09800563725898
2003	-256.8616511168217
2004	-258.61860625919275
2005	-255.42258434580265
2006	-238.90908965792215
2007	-224.6767701070565
2008	-214.99289608780933
2009	-182.79854683364175
2010	-178.60956584577087
2011	-186.0960751888917
2012	-180.63802491241597
2013	-178.49929114143924
2014	-164.53920470097145