Year	% of GDP
1960	20.43616595692179
1961	22.14259886262779
1962	23.506397810475104
1963	21.325429920391496
1964	20.36818990965452
1965	20.80247321782833
1966	19.683427713720405
1967	20.470036921329168
1968	20.708121356923648
1969	21.893348131175713
1970	21.255121716076165
1971	20.030663433534762
1972	20.90668410560402
1973	21.440203980917914
1974	23.482244776415705
1975	25.189579075209572
1976	26.961504499596067
1977	27.096667872390647
1978	27.021716638060795
1979	25.820290254934108
1980	28.795792619986955
1981	31.718154322254744
1982	31.61340777111902
1983	33.37463250666228
1984	32.62114866420646
1985	31.269524473291057
1987	26.777535671514734
1988	23.101138931348725
1990	24.116638694195004
1991	24.729693543894058
1992	26.93983743373395
1993	28.464357225272696
1994	32.10822014325411
1995	32.929646379854624
1996	33.414721347950035
1997	34.25344862604647
1998	33.04601338228605
1999	34.274026335973794
2000	25.82000057000638
2001	28.509147113391087
2002	27.455592548074986
2003	27.33453943104133
2004	28.85464605810207
2005	30.909996478009987
2006	32.288301417495965
2007	33.75519652966081
2008	35.961494304724404
2009	36.92013333188909
2010	37.93686251330834
2011	39.652471555676605
2012	42.74628079255813
2013	45.377609979776864
2014	46.3781588471126
2015	48.99143708327951
2016	48.919958362870666
2017	49.024116274934194
2018	48.016133658821495
2019	48.70276019277622
2020	58.27843806878854
2021	54.6261375585987
2022	48.94135305670813
2023	48.521524242530624