Year	% of energy use
1971	-178.6730043225922
1972	-177.76684433300557
1973	-216.80464787987572
1974	-219.03862283288404
1975	-201.2188107269049
1976	-213.21728904054189
1977	-200.84695093971834
1978	-192.39790523839815
1979	-242.63482753019073
1980	-192.68417133550827
1981	-89.35280891134983
1982	-85.22263421599192
1983	-79.90185440408939
1984	-97.09460232155628
1985	-105.23940322363843
1986	-112.07414860418477
1987	-122.82850287409578
1988	-143.5324787912572
1989	-148.48099054526318
1990	-124.01341869924545
1991	-72.86537245275919
1992	-71.57057511020152
1993	-68.14479771999441
1994	-69.31563582963295
1995	-70.17930194247772
1996	-75.7484492467961
1997	-93.05811306765696
1998	-118.82447830274312
1999	-129.85230167244788
2000	-131.87469589443737
2001	-125.82943723170824
2002	-110.62359694493261
2003	-101.47645550037656
2004	-114.92357585086172
2005	-114.87647943959742
2006	-119.77982493009748
2007	-123.51644935123473
2008	-123.56624212926636
2009	-115.93701254212907
2010	-113.16007526255049
2011	-107.95942485670872
2012	-101.0194079307258
2013	-94.44970092073416
2014	-97.8901932353178