Year	% of GDP
1961	63.2576181643539
1962	61.998945499833205
1963	61.42237103745685
1964	60.11605986926938
1965	59.04995554837065
1966	57.589024441508386
1967	57.862854191801325
1968	57.83399444628765
1969	57.31840845956463
1970	56.21359211711856
1971	56.07630059426383
1972	56.20032090353855
1973	54.748336438567065
1974	53.421577384868115
1975	54.780815106085946
1976	54.07745889669321
1977	54.52689693105188
1978	54.95957383423795
1979	53.74875430995568
1980	53.6118107044961
1981	52.73619685197553
1982	53.63116690409886
1983	54.22058502406745
1984	53.739940171347186
1985	54.12027750501473
1986	55.47500142414978
1987	54.99498551370626
1988	54.46837902420505
1989	54.8581775189516
1990	55.841616331248986
1991	57.2806306312725
1992	57.702425824986506
1993	57.650156551817375
1994	56.586722762925966
1995	55.82651231751002
1996	56.42426328803002
1997	56.87648514987953
1998	57.08333200430816
1999	56.24788549057115
2000	54.53459703470779
2001	55.09416487918675
2002	56.01158427628013
2003	55.675589085246216
2004	54.71834001635069
2005	54.3060398586636
2006	54.4190263896072
2007	54.72814167818161
2008	54.461328634191084
2009	57.5729284798776
2010	56.99836619156974
2011	55.90274978960724
2012	56.0203151808363
2013	55.96086527052978
2014	55.79631429592605
2015	57.8089690631528
2016	58.484310055674236
2017	57.97623235283263
2018	57.88693511391653
2019	57.75455433891361
2020	56.82378859783673
2021	54.21781136638933
2022	53.78931919187826
2023	55.22541295709124