Year	% of GDP
1960	12.928138712351714
1961	12.511496535451153
1962	11.844913517783269
1963	12.33457185394833
1964	11.343977887099301
1965	11.635781168686421
1966	11.503589417410115
1967	11.07229404848858
1968	11.447408310878282
1969	10.965818999966931
1970	11.043551610901272
1971	10.815942683499683
1972	10.236988548050494
1973	11.917955667507425
1974	16.38683544352389
1975	15.044115233971517
1976	15.300059335744745
1977	14.603600041801338
1978	13.848606606068895
1979	17.088603796410784
1980	19.818628512229804
1981	19.76104539172741
1982	19.33964850367448
1983	17.94283143286826
1984	17.87702857748153
1985	16.918836755410894
1986	13.277883006087857
1987	13.58572777017629
1988	14.514541856199296
1989	15.919026957036891
1990	16.895403801993996
1991	16.388828199722784
1992	16.319008026171577
1993	16.109558395770772
1994	16.704314538276776
1995	18.155575892050006
1996	20.087031673840585
1997	21.17238313405729
1998	19.817036909834776
1999	19.16646144998662
2000	21.616474823201827
2001	21.779931549085184
2002	22.562582124328994
2003	23.954259941959208
2004	26.753386170696842
2005	28.73156091166872
2006	31.05396460228846
2007	31.71364413259098
2008	32.643473870914995
2009	26.144428623405407
2010	29.12869272689783
2011	30.76615584227096
2012	30.36548129796699
2013	30.935477809043288
2014	30.64936405019132
2015	27.307661786344646
2016	25.5055629865732
2017	26.739867270624256
2018	27.61652988431595
2019	26.30820905354857
2020	24.03941519404124
2021	26.341861952131918
2022	28.909291341875676
2023	28.02587351932535