Year	% of GDP
1960	19.152858410067285
1961	18.778710430471715
1962	18.219311983900287
1963	18.34006845264729
1964	18.308386845810578
1965	17.988035848602514
1966	18.85481720218324
1967	18.368510437378074
1968	18.164075225589702
1969	17.585328124814744
1970	18.040575100868363
1971	18.69468177960333
1972	18.161802678905058
1973	20.80846276307814
1974	27.710250367712263
1975	27.174489301489952
1976	27.446253010533614
1977	28.139679200600984
1978	29.399565757596015
1979	30.598312053954007
1980	35.14811290647043
1981	31.754451883583737
1982	30.832343363637744
1983	28.562975915881125
1984	28.524480820712515
1985	27.107377920457015
1986	25.47817126563541
1987	28.430179363928918
1988	31.276666897126063
1989	30.41942068367799
1990	29.417921861338186
1991	31.841868186745526
1992	32.870871962843104
1993	33.10146660619977
1994	33.92109602620724
1995	35.64262746527205
1996	34.812451619749275
1997	35.65943838920947
1998	34.08999620190797
1999	37.563566340131615
2000	41.61423928065379
2001	40.8428993296233
2002	43.34124517595842
2003	46.46125739574702
2004	50.90489851491081
2005	52.29874424545116
2006	53.21509178921885
2007	52.143096616889046
2008	53.55992640855898
2009	42.86479212069045
2010	45.89783249271518
2011	47.92439769770684
2012	46.94457937470306
2013	45.64459155797906
2014	44.042165388834825
2015	40.03985844255038
2016	37.41774896633172
2017	38.81979753909786
2018	40.79232213987468
2019	39.21609886154829
2020	37.76227320774171
2021	42.01388352098124
2022	45.09790495123905
2023	41.711741280448734