Year	% of GDP
1960	18.343425802024473
1961	18.90312346377326
1962	20.06738648886442
1963	19.75139630597505
1964	19.046692189498874
1965	18.207482132925353
1966	18.27838857534398
1967	18.313074976109434
1968	19.23458799025109
1969	18.725970162336388
1970	18.94682338356487
1971	19.206449482777863
1972	19.52605037314395
1973	22.228370631846552
1974	33.92644350624739
1975	32.632487447380655
1976	35.15832765787626
1977	34.631399939222696
1978	40.427747416530934
1979	44.48701106760613
1980	48.94044834368151
1981	48.682903677888454
1982	45.14844525083168
1983	41.989849878052866
1984	42.144782709763646
1985	40.012613030831886
1986	38.737464207567044
1987	43.649073898156885
1989	37.66055339944689
1990	39.67206562293454
1991	42.68991623992566
1992	38.69238117870184
1993	41.00236142227496
1994	42.73350362192252
1995	42.41285880643069
1996	41.2473161423404
1997	41.82000372345935
1998	41.21306292970849
1999	46.146451373709425
2000	50.931870150630765
2001	50.5699424634489
2002	52.68171169698396
2003	57.38026310409596
2004	62.15281565863212
2005	62.50935154900241
2006	62.824851420697755
2007	61.23509672098842
2008	60.057666575106694
2009	49.294157057305895
2010	52.273167235344545
2011	53.122418658141804
2012	51.91933997002213
2013	50.582819050404346
2014	49.02259097674159
2015	45.57924157447017
2016	43.21369379426396
2017	43.843464434697424
2018	45.16838105717842
2019	43.92465354196196
2020	43.36902142393062
2021	46.85402268359405
2022	49.53663082485174
2023	46.486240510374266