Year	% of GDP
1960	15.124075130382952
1961	14.979771530181818
1962	15.531448503586798
1963	14.83836806691953
1964	14.240392058257411
1965	12.902028698664028
1966	14.237735396425572
1967	15.115635719818524
1968	14.63096015674566
1969	19.461308251389482
1970	17.26434426229508
1971	15.231316725978647
1972	14.468420017052535
1973	13.545968267767877
1974	12.502629254133188
1975	13.918049441246191
1976	15.21372049134192
1977	13.829758013568819
1978	19.97187390132427
1979	25.2848989253059
1980	31.333142934447665
1981	27.385447914828536
1982	30.51149761180193
1983	29.063905724459506
1984	25.729449871866585
1985	23.68406466512702
1986	23.583360263882234
1987	23.257067043507877
1988	22.506779828995143
1989	21.536696428216967
1990	21.883313029858538
1991	22.615047872269
1992	23.522924734823636
1993	25.19692132154975
1994	26.638622376028348
1995	25.58882373025524
1996	23.890419305115813
1997	24.360280498544267
1998	25.11959889428735
1999	27.28190067841329
2000	28.036093114382858
2001	22.00116811307107
2002	20.073262398973377
2003	20.038431401813366
2004	22.637924165443472
2005	23.37195070740082
2006	24.872051397225967
2007	24.72101507591609
2008	25.28656566036726
2009	23.730516434060977
2015	28.258623489640637
2016	30.08910024419653
2017	31.60018790989457
2018	30.74196307904386
2019	28.54616772529695
2020	25.564061531916842
2021	26.34573014923827
2022	23.78707284264099
2023	17.588302919644626