Year	% of energy use
1971	-81.65219568994672
1972	-72.32631501360726
1973	-84.16638390595001
1974	-106.35703190504492
1975	-148.97371875744537
1976	-149.20743885045746
1977	-155.75621867248378
1978	-132.91536286168926
1979	-113.19324095021705
1980	-119.12708703779094
1981	-95.06789195848614
1982	-95.07977516020503
1983	-87.26498963683979
1984	-86.48593270573241
1985	-92.00559859445288
1986	-81.1610182586861
1987	-80.48083193231133
1988	-73.43733814077827
1989	-65.87507499482567
1990	-49.4970155408022
1991	-45.57814176359332
1992	-35.56310757925716
1993	-30.94776716643196
1994	-37.263139275449305
1995	-35.534433651801535
1996	-25.994771368286983
1997	-30.846437854413466
1998	-25.18984082035688
1999	-28.525388103194846
2000	-42.58879494724473
2001	-35.28385464181678
2002	-51.08248196415632
2003	-77.57538559698182
2004	-81.46438355686539
2005	-76.06992091486232
2006	-83.66338834277028
2007	-78.25199911099904
2008	-86.60072399408085
2009	-92.06378203688371
2010	-87.32408776300512
2011	-79.82984398043378
2012	-81.13187716440184
2013	-78.5304203245728
2014	-78.41080392315651