Year	% of energy use
1971	-1098.0529727423689
1972	-1261.3542935141631
1973	-1071.4097217484457
1974	-927.057310761923
1975	-860.7418129465858
1976	-833.0055443934775
1977	-780.2669341916821
1978	-700.4775059272209
1979	-588.901701776757
1980	-486.65326999289357
1981	-451.49890660861513
1982	-324.3414981846982
1983	-332.10593939306295
1984	-353.23103383822377
1985	-355.11755474675107
1986	-319.62583870903046
1987	-348.6527442177556
1988	-335.3553572083187
1989	-357.4440542468644
1990	-351.2125636739212
1991	-337.105802622555
1992	-333.7602801079238
1993	-335.217017927651
1994	-332.95060010237466
1995	-340.1445420176346
1996	-379.8625014158939
1997	-405.61790064407217
1998	-410.4515635603935
1999	-415.38475924482697
2000	-426.80354276348186
2001	-405.6069841170318
2002	-394.6625119107649
2003	-405.04180181466944
2004	-407.11578574622604
2005	-414.0453466230263
2006	-375.0793199268497
2007	-345.94471998820796
2008	-334.70246250618806
2009	-275.4256100486542
2010	-275.4634860999883
2011	-248.73482364809524
2012	-212.76593180302115
2013	-189.3454690038968
2014	-177.1243579137855