Year	% of GDP
1960	8.401854043662794
1961	8.648637949972848
1962	7.800242330983967
1963	8.37488766112959
1964	8.722161464404289
1965	8.294560437374884
1966	9.312445604873803
1967	9.303044505072593
1968	9.82421875
1969	10.104914887351098
1970	9.56526188521147
1971	9.25667367477843
1972	19.064155359342145
1973	20.47158043896578
1974	20.089275709039565
1975	19.07493639488319
1976	15.697033504323747
1977	14.100293953488372
1978	18.837920489296636
1979	39.84417335559265
1980	15.64500280260654
1981	22.052956111715634
1982	13.28020643742915
1983	19.789922992399443
1984	16.99516448042665
2013	4.6504484964232855
2014	4.881020555029962
2015	4.687461383505824
2016	5.286538426387526
2017	5.887466134537908
2018	5.977036596765008
2019	5.611960081496008
2020	6.464874400717617
2021	6.875606073114773
2022	7.281834559892468
2023	6.998444599232936