Year	% of GDP
1961	14.470419375345285
1962	13.845652894848785
1963	14.2689263693334
1964	13.547665903593513
1965	13.960945517317075
1966	14.121166298706715
1967	14.012691225818237
1968	15.36079436904225
1969	16.323629590774758
1970	16.21368054479169
1971	16.49258893274032
1972	18.826232929602078
1973	19.35602836144737
1974	16.556640523886134
1975	21.114484524434943
1976	21.458385160640525
1977	23.072078126548604
1979	26.164733916628556
1980	25.8672705820399
1981	28.529244200487494
1982	27.022488434540453
1983	28.01211090730712
1984	28.305048558374963
1985	29.022094412483924
1986	32.49423835917071
1987	34.55536100385677
1988	35.28200434017626
1989	34.45231303737345
1991	29.32421877204985
1992	21.124559678939107
1993	21.488150031678426
1994	22.549190633442763
1995	24.280691176858042
1996	23.521451976830242
1997	26.76836897154233
1998	29.81452380648689
1999	31.768320976019236
2000	34.25170817968247
2001	34.81573265426764
2002	34.63653158496754
2003	33.83880654050704
2004	31.701690020400594
2005	31.83871485069712
2006	33.43424402971364
2007	34.749782464573215
2008	33.14328366730734
2009	36.32003267594469
2010	36.68186829777211
2011	36.21506086550826
2012	35.05051013110464
2013	32.53224690045995
2014	35.27490537999701
2015	39.38196862464656
2016	43.55356744227078
2018	27.96999943811265
2019	27.62413512357502
2020	32.31849287281814
2021	31.53434675374194