Year	% of GDP
1960	23.611777178108852
1961	24.688658550842636
1962	23.242258132406906
1963	22.96865629229517
1964	24.480093201783312
1965	26.708214459699654
1966	30.832908979009645
1967	27.01995100647938
1968	25.984106505419735
1969	27.789865530155755
1970	18.746268381093177
1971	20.14406805689678
1972	19.942974108911617
1973	23.155334292717708
1974	22.55730828223646
1975	20.01911913049502
1976	20.440405395098434
1977	21.985627205220222
1978	24.300288597412116
1979	22.9153676000161
1980	22.259321023414557
1981	21.95445414588239
1982	23.338669489506987
1983	22.025453741574456
1984	23.17983692174149
1985	24.251019181212733
1986	25.855813303541037
1987	28.58845072731628
1988	33.214813565248505
1989	34.982974255608916
1990	34.03685180106653
1991	35.8028214637247
1992	35.33184045095485
1993	37.0392955133654
1994	36.8168301667891
1995	37.448472050785114
1996	36.70679799353426
1997	34.91549388469124
1998	35.26039161953508
1999	33.24233489901303
2000	32.290298274889444
2001	30.522707105199792
2002	31.170130640403855
2003	31.443180737096192
2004	31.011454525427645
2005	30.50649616890919
2006	32.04657880991029
2007	33.52565103338904
2008	32.01865389146248
2009	30.95416789915213
2010	32.02365438287514
2011	30.897276407887357
2012	30.37862025668627
2013	31.08426548091785
2014	30.487424929918465
2015	31.534145645789856
2016	33.125362354550134
2017	34.770732969609256
2018	34.93752008981916
2019	34.05684019834244
2020	29.157512621405225
2021	29.53518433422114
2022	27.718114525738414
2023	25.680751074159993