Year	% of energy use
1971	-1121.031408314104
1972	-1078.6746459733995
1973	-1056.2381136070817
1974	-870.7360756248167
1975	-770.8778852474042
1976	-765.5995640989157
1977	-685.0957361982728
1978	-644.4234403302622
1979	-501.6280206182479
1980	-331.8310114870375
1981	-183.74561617332918
1982	-192.07258681309347
1983	-199.77394778986707
1984	-178.72673740183916
1985	-174.00839034801942
1986	-159.96005986654768
1987	-190.1308399518389
1988	-215.24181281212753
1989	-212.15034458651544
1990	-204.44587947201526
1991	-161.50743571004116
1992	-154.3327182390585
1993	-146.42599305554444
1994	-135.94220856874762
1995	-134.04458310776414
1996	-135.31873033790419
1997	-134.47943195584048
1998	-153.89991887256545
1999	-152.06610526541192
2000	-157.57214859971924
2001	-136.85421883992024
2002	-130.0700093897995
2003	-128.64597379445502
2004	-124.85391390745855
2005	-116.40570479187583
2006	-114.09581148701804
2007	-110.38875380893711
2008	-101.67729081683203
2009	-92.61049230073263
2010	-93.72570449036807
2011	-78.69897214516196
2012	-71.64266511566919
2013	-62.07422692743776
2014	-54.77227438173024