Year	% of energy use
1971	-2041.0784852822662
1972	-1640.0633162645786
1973	-2110.8196709331287
1974	-1879.077638914726
1975	-1790.7021363984895
1976	-1537.4923809672914
1977	-1428.7616143873308
1978	-1375.6388091945248
1979	-1572.7687214172736
1980	-1293.477355813821
1981	-375.24335399119263
1982	-410.19087535936063
1983	-312.6891583538755
1984	-380.1953092013998
1985	-395.106607523107
1986	-446.89840116802327
1987	-590.6780106176608
1988	-646.0965526580363
1989	-598.4422756943312
1990	-450.51677185439524
1991	-22.113887031504284
1992	-21.610035564650673
1993	-18.041611990759773
1994	-18.445116282954434
1995	-19.63880386982241
1996	-23.36426003866352
1997	-99.247744550882
1998	-293.80239401377435
1999	-496.43616630858196
2000	-419.6401097844025
2001	-359.7599736706374
2002	-316.6851069726747
2003	-216.80782082348702
2004	-300.6384926219571
2005	-270.16295120317375
2006	-310.00936456716283
2007	-317.8138490855433
2008	-329.7175570572318
2009	-275.0569536031437
2010	-232.18127710691127
2011	-244.64882561357047
2012	-240.161099137884
2013	-218.5695966739171
2014	-229.39049104602103