Year	% of GDP
1960	16.628574030344755
1961	16.44003330241671
1962	16.163084362327893
1963	16.437805835524824
1964	16.92216664170812
1965	17.045330820245372
1966	17.238928200892936
1967	17.040797584224386
1968	17.83267806526968
1969	18.61406762940223
1970	19.70915361763034
1971	19.761275554272807
1972	20.248866089588144
1973	23.02388452895542
1974	28.616242524254968
1975	26.452242710740624
1976	27.650932091836165
1977	27.779432140925035
1978	27.127465491856633
1979	29.67265049696236
1980	31.901495478536756
1981	30.82742950354912
1982	29.300807403243986
1983	27.92618053682164
1984	29.0662478190782
1985	28.34893625654625
1986	26.454652013428856
1987	26.964789332627632
1988	27.508672883097258
1989	28.41005401659613
1990	28.99553348079426
1991	27.986213309709026
1992	27.720853872144524
1993	26.963931927472274
1994	28.66862556766156
1995	30.70672522186285
1996	31.70257137473176
1997	33.04858764869527
1998	32.89956352988801
1999	33.52382661533962
2000	36.43257145898135
2001	35.253194461594425
2002	34.93292331295529
2003	36.106023493148804
2004	38.684750014891286
2005	40.769998795200266
2006	43.77279366680841
2007	45.42283803517302
2008	48.06469335477541
2009	39.288899885646
2010	44.20399781725332
2011	48.21038914219891
2012	47.843182387928636
2013	47.975744256608266
2014	47.21335147102817
2015	44.042452391326556
2016	42.37456049798885
2017	44.44563897700806
2018	45.64332799217264
2019	43.76667852763946
2020	41.337729319223854
2021	45.92739882754073
2022	50.41940019890241
2023	45.433106734831554