Year	% of GDP
1970	17.760168745379985
1971	18.98507030921591
1972	21.465219444881782
1973	18.22739385180106
1974	19.507898269552584
1975	19.463874737200896
1976	20.57860770097943
1977	19.2939474250277
1978	20.610958061044823
1979	20.2521274496022
1980	23.242533409684523
1981	23.96089168965604
1982	25.629016339510912
1983	25.461562916012635
1984	23.660542772761506
1985	23.14991606083968
1986	25.090706335959652
1987	25.46715401562187
1988	25.85454449738096
1989	23.400643872741778
1990	22.987136240316076
1991	23.348497862178974
1992	22.68145958773929
1993	22.351357262976933
1994	26.770379653169723
1995	28.460969995785902
1996	28.1245516913721
1997	32.57208284714119
1998	33.49822588705647
1999	35.713394817742646
2000	32.12899770279986
2001	34.99861276648901
2002	35.50594768364534
2003	33.82656159615402
2004	33.97993703176033
2005	34.01465266949391
2006	35.70226734865257
2007	39.918867581178425
2008	38.321440774323584
2009	37.839452176559625
2010	36.9511248689049
2011	37.99415080648079
2012	38.84958902009532
2013	36.02377565626073
2014	39.12782296961122
2015	49.37163595999162
2016	47.6730845453259
2017	49.33370561677631
2018	49.114983234785946
2019	47.82754000065994
2020	45.47970999988112
2021	44.80546000040959
2022	45.37360010110073
2023	48.77166588292804