Year	% of GDP
1965	16.900556717324978
1966	17.310165080218823
1967	17.19884519352012
1968	16.971563682388663
1969	17.564089150253235
1970	18.850200831072815
1971	18.97632821404743
1972	18.800133891013747
1973	19.977735013747186
1974	24.528406384847493
1975	32.71756946167098
1976	27.644075850707978
1977	29.690023196077437
1978	25.86921250125344
1979	23.555673147435698
1980	27.488329738553606
1981	32.36087001226162
1982	29.404690286954676
1983	25.139781724042688
1984	22.011720706879927
1985	20.211910333445537
1986	16.61760153234616
1987	16.925758192551726
1988	20.631284436107936
1989	23.043626375070218
1990	18.78674839617668
1991	30.046471649543697
1992	29.25686570945501
1993	30.794338386660673
1994	27.37596143319974
1995	26.77779745523752
1996	25.229731429775644
1997	26.076755440929382
1998	26.78351266004816
1999	26.750720790950496
2000	27.379017818802925
2001	28.32874102839666
2002	29.57229637505388
2003	30.823954715414576
2004	33.1967891311323
2005	33.075779741436946
2006	30.577884306824338
2007	30.659267896307384
2008	32.6821145912577
2009	32.15470699061966
2010	29.452495682600834
2011	26.732234173724738
2012	28.987995290530467
2013	30.2597937163705
2014	30.458094662086964
2015	29.150254519446
2016	26.822961005367006
2017	29.35786224954989
2018	31.851016332176258
2019	31.660068953365872
2020	27.39584296232155
2021	27.951837560738557
2022	29.710368404299352
2023	30.482283853138625