Year	% of GDP
1975	81.20621547282165
1976	75.6813473046545
1977	75.72677512932812
1978	74.35340798186655
1979	68.22800445915962
1980	66.86834229668041
1981	65.5022809984587
1982	66.15279734592029
1983	67.37045773554111
1984	63.66831114326359
1985	63.81054655632885
1986	61.16559426753921
1987	59.532638215506694
1988	60.63430281476057
1989	59.5196915425435
1990	61.22393601883649
1991	65.70830702860744
1992	63.44709693796579
1993	59.47415131560828
1994	58.22444955635358
1995	61.85858298021753
1996	63.02346801472123
1997	62.5147475284044
1998	62.36982848807112
1999	61.354380864488235
2000	61.90367873241113
2001	61.600483003647845
2002	61.76027741599188
2003	60.89295934820613
2004	61.47630105910306
2005	61.57097957632234
2006	61.43164963939416
2007	63.931396477724824
2008	66.7546135694978
2009	63.69545907034422
2010	65.79881011002087
2011	65.79993780867481
2012	66.86826494000731
2013	67.03439058208751
2014	68.68043269272843
2015	67.30983067297743
2016	65.51269350665852
2017	64.92429122997619
2018	64.7719929255212
2019	63.08809308815737
2020	61.07110539501704
2021	57.602106578122346
2022	59.7808762645354
2023	59.92217324454503