Year	% of GDP
1960	21.65021573379041
1963	24.121528968117932
1964	23.929196654347404
1965	23.40794724969634
1966	24.412553225043368
1967	24.109038412545644
1968	24.253494685034376
1969	24.610487143273478
1970	23.109619242457345
1971	23.620457604306864
1972	25.24609331795415
1973	26.825088541071633
1974	28.638351030605868
1975	28.914531061317593
1976	33.16013647615013
1977	33.28355648831085
1978	34.96820420958352
1979	34.84078431372549
1980	36.757157404008005
1981	36.30677438156897
1982	36.530821631810646
1983	37.079633724228145
1984	38.464508991472975
1985	38.98330146087574
1986	38.84221669930438
1987	39.47048589433026
1988	39.70014174290717
1989	39.17446699714501
1990	39.62172295646189
1991	39.214816624049455
1992	40.955310113099955
1993	41.78378599733452
1994	42.196609124118204
1995	41.89547055125208
1996	40.728407405818615
1997	40.05662186464705
1998	42.514014613655185
1999	37.45042443941149
2000	39.68895558962623
2001	42.816623415654746
2002	43.97383540318471
2003	43.636822875043094
2004	42.730841179835046
2005	42.40124289429749
2006	42.06132688388401
2007	42.04075362402063
2008	42.96689530998203
2009	45.51738018957189
2010	47.34365168990448
2011	46.59612144089238
2012	46.24771574403731
2013	46.44304538799414
2014	46.73319940885815
2015	47.902646178253065
2016	48.44287772183709
2017	47.335131408245594
2018	47.437303198059396
2019	47.64169609156216
2020	47.76948518824135
2021	47.51810167758812
2022	46.1333025732782
2023	45.60445385713425