Year	% of GDP
1960	27.20585675072603
1961	30.40807176213337
1962	30.289942897013244
1963	30.71766129692722
1964	30.522439726727168
1965	30.01482063738388
1966	29.216662935302846
1967	29.957066412197374
1968	29.341428939128882
1969	27.987989966725735
1970	26.741851879944328
1971	25.80114611338566
1972	25.0407936407419
1973	24.879699099627413
1974	23.16279118860827
1975	22.74845063277864
1976	20.79752944774876
1977	20.430438892566077
1978	19.858105647863237
1979	19.095233179183303
1980	17.07292764070622
1981	16.079838337156954
1982	16.48988029152479
1983	16.887330106585605
1984	16.931528120763918
1985	16.77380959430025
1986	17.0824593773759
1987	16.956502913424533
1988	17.138345858237386
1989	17.194703019562382
1990	16.541849655385583
1991	15.960717521946535
1992	14.052764757168873
1993	13.047645851549937
1994	13.127895796225008
1995	12.933901094622389
1996	12.970276862992257
1997	12.399403597553787
1998	12.371717863305737
1999	11.76525959260847
2000	10.80937101050123
2001	10.706348798715341
2002	11.030565267226715
2003	10.881163207673833
2004	10.426039808951863
2005	9.614803476465688
2006	9.093459325744762
2007	9.010180598394935
2008	8.97792870859013
2009	9.357979871859522
2010	9.077630771136546
2011	8.875249496874668
2012	8.74321697866938
2013	8.773096577696974
2014	8.796003673343025
2015	9.160894148373016
2016	9.151927646195416
2017	8.739924127413163
2018	8.380388834767595
2019	8.558780869305318
2020	9.407006419698986
2021	8.957975997628864
2022	8.813261690379825
2023	8.607894516119586