Year	% of GDP
1960	22.636109739835554
1961	16.924616329683136
1962	15.89619872939777
1963	16.95768493856272
1964	18.243714335517907
1965	19.003825602961605
1966	19.112225603973283
1967	18.09939485394635
1968	17.84384816103698
1969	18.989075284496646
1970	20.49985600366868
1971	21.256024132957794
1972	21.909321827387522
1973	21.705555195421486
1974	21.515711167229203
1975	24.963115458116505
1976	26.308654561953798
1977	26.7993984614107
1978	26.63513812685963
1979	24.424188533492572
1980	24.34723759008511
1981	24.016462797964845
1982	23.990481672380184
1983	24.61117391081996
1984	24.2296262209631
1985	23.986991339054253
1986	24.808751378961734
1987	23.92643813186608
1988	24.315532378746223
1989	24.57526540122798
1990	22.507097895046613
1991	21.671363257332292
1992	23.02559622787677
1993	23.631928811322165
1994	24.08074719559765
1995	23.197033817674935
1996	23.136381393072543
1997	23.144777142962408
1998	22.91314071231978
1999	22.775202577218767
2000	22.86790073381976
2001	23.51700285853682
2002	23.84329762224068
2003	24.770100396853216
2004	25.70893356256423
2005	25.950753412367067
2006	26.342260177692822
2007	27.346036509606403
2008	28.280496768712755
2009	29.82952120577781
2010	29.620524516249485
2011	30.08851542487385
2012	30.624845004140198
2013	30.9331716742133
2014	30.962303131608287
2015	31.249530563340205
2016	30.904647346591048
2017	30.90817320598067
2018	31.928362422708084
2019	31.8571406789857
2020	31.993687055533986
2021	32.25944893472624
2022	31.870257217197423