Year	% of GDP
1960	88.95662368060164
1961	88.97933625534937
1962	89.01079455009317
1963	87.64875794290504
1964	86.75552170879544
1965	84.2454214445349
1966	82.51522069875612
1967	82.53721720677825
1968	82.86668922348338
1969	82.53815542106797
1970	82.9013280227447
1971	86.52926862128744
1972	91.32504019315427
1973	93.94313806086441
1974	78.17073244994894
1975	88.86895657253137
1976	82.88978400751242
1977	87.37742335593917
1978	85.53197495218512
1979	85.0410517371522
1980	83.13936934835941
1981	88.18490999553264
1982	90.9494433894363
1983	86.00325068373648
1984	83.19257728778095
1985	79.81709136625737
1986	78.05647446433962
1987	74.88682002869744
1988	70.27345439113401
1989	70.21954439668995
1990	71.61781553244447
1991	72.97614349556042
1992	74.82661349994378
1993	75.94064551306904
1994	74.58505266318946
1995	72.38629855669474
1996	72.13864362939823
1997	72.48402398700861
1998	74.93032939785287
1999	75.52690736822544
2000	74.7136597794964
2001	74.35893053042895
2002	73.86102338271472
2003	72.17233509453536
2004	69.27463375046172
2005	68.44368934682737
2006	63.79396625703393
2007	64.36929824916052
2008	69.45456218692955
2009	69.53475344984791
2010	69.13422384271135
2011	70.4557855454613
2012	71.67361241819272
2013	73.47140197478758
2014	74.46872876891611
2015	75.36751355070791
2016	76.50275457576896
2017	76.7267353370674
2018	76.91588273168576
2019	76.92340916269804
2020	74.46387597605263
2021	76.82267225381028
2022	78.36918755840728
2023	75.73982961951373