Year	% of GDP
1960	18.981791218773708
1961	18.761419678989597
1962	18.199629096828268
1963	18.026778722680064
1964	17.822101993666696
1965	17.5619799443714
1966	18.646525752440187
1967	18.40412735309753
1968	18.474907534476056
1969	17.79751373787723
1970	17.90160054008114
1971	18.01785403887009
1972	17.491358889648627
1973	19.867998166474695
1974	27.601633469523726
1975	27.01933987022312
1976	27.033004618533084
1977	27.144197322369926
1978	28.575425912383384
1979	29.927075291398214
1980	35.01883530728952
1981	34.08384084358162
1982	33.4744416684706
1983	29.78641988518107
1984	29.82235654097048
1985	28.343978821661413
1986	26.43554783528355
1987	30.256834474851857
1988	33.21544638679909
1989	31.76664924347417
1990	29.96367166002845
1991	32.601504452428635
1992	31.486403776818666
1993	32.06173066340446
1994	34.17448395202514
1995	36.549315003350905
1996	36.43287341468768
1997	37.27244598175672
1998	36.29327263137413
1999	38.728675445152106
2000	43.177390642614625
2001	42.124235450722495
2002	44.89631762895652
2003	48.14755074280264
2004	52.376244513372654
2005	53.63905023544598
2006	54.66858960706938
2007	53.300341427283364
2008	54.429970300572556
2009	43.87319912383266
2010	46.7434369819444
2011	48.70614439931172
2012	47.623091688540626
2013	46.54542479982113
2014	45.10736606507503
2015	41.877380417883906
2016	39.35803314197423
2017	40.65108810307633
2018	42.8050103168484
2019	41.12376829482269
2020	39.93921370107442
2021	44.120154836601195
2022	46.910681667224246
2023	43.259922067503226