Year	% of GDP
1965	14.68500888582978
1966	12.91732967360247
1967	11.86186504370354
1968	11.2862539998076
1969	10.935292127475376
1970	13.422818690182462
1971	13.342480137262205
1972	14.095687719623932
1973	15.042018181726629
1974	13.098783099946726
1975	12.82204819350928
1976	12.737881255302208
1977	15.059771156113646
1978	16.311418398960704
1979	13.800194985495832
1980	12.95967336364437
1981	13.861395043283126
1982	12.180085689385892
1983	10.638959158628927
1984	8.583375454205358
1985	8.026030198136821
1986	7.929816436430334
1987	6.6925947466881075
1988	6.7703740038850215
1989	5.943402843528813
1990	4.9179915377164685
1991	5.1283040067058066
1992	4.681413374169266
2015	18.577611386569487
2016	18.001366556103278
2017	16.18476037060248
2018	16.532280107523192
2019	17.273115356020632
2020	14.93653582961551
2021	15.376249611098055
2022	18.01801393231485
2023	18.657377893101938