Year	% of GDP
1966	54.01451533925679
1967	54.75751748041987
1968	54.62270175383588
1969	55.06735313542954
1970	56.787657626229596
1971	57.446606892686944
1972	57.326301348654376
1973	58.24905683241551
1974	59.04413879248861
1975	60.173629529828034
1976	60.534263050122185
1977	59.91750311388567
1978	59.82275986370287
1979	60.35406562226919
1980	59.13321903242981
1981	59.97158630594345
1982	60.157321611424244
1983	60.27155943291842
1984	59.22474391750071
1985	59.09242953154254
1986	58.379797545496295
1987	59.17654020840314
1988	59.89789222346974
1989	60.06037117397918
1990	60.891223943749786
1991	61.551925393868814
1992	61.84682804797901
1993	63.07349666303281
1994	62.526466269408395
1995	61.63392081718909
1996	60.993570078405845
1997	60.769177815080724
1998	60.73897986036039
1999	60.736309306315604
2000	60.34456778663967
2001	60.88685932797823
2002	61.476924321724724
2003	62.241409932592084
2004	61.99291967440246
2005	61.58732252668071
2006	60.93989649961446
2007	61.48616610456644
2008	62.33669002849269
2009	65.4425601091589
2010	65.38841343598631
2011	64.72815861448571
2012	64.28426580647223
2013	65.1508646705488
2014	65.59860768304885
2015	65.83381243295743
2016	65.14936431469972
2017	64.90632144233702
2018	64.9170030904082
2019	65.07011648282602
2020	65.75775011668085
2021	66.40170038784797
2022	67.26537247839546
2023	66.07089108590554