Year	% of GDP
1960	12.71525646720216
1961	15.997050857422392
1962	12.794031077990104
1963	15.86887069174214
1964	15.980452265096389
1965	17.152059135427592
1966	14.958664926022628
1967	13.650646699026783
1968	14.892573437500001
1969	15.989733801904437
1970	10.673682790364731
1971	12.652130880196399
1972	14.649974806606739
1973	14.580241532898148
1974	14.262278512454152
1975	11.70306848474518
1976	9.29606917528583
1977	20.261627906976745
1978	25.859327217125383
1979	24.340579721758488
1980	33.239154558560635
1981	24.8141138919115
1982	25.962698471368213
1983	23.578811899000826
1984	14.604921517035324
1985	6.33520551724138
1986	7.067795314065381
1987	6.63040664119617
1988	4.761524365618908
1989	7.104470787404662
1990	8.702643225858088
2013	16.151426214932986
2014	16.79159565219496
2015	14.860013231861421
2016	14.439455655082927
2017	12.049100600618758
2018	13.517411231923035
2019	12.005819786751522
2020	12.798587928463359
2021	15.571144633251746
2022	17.314044495916598
2023	17.890279117126205