Year	% of GDP
1970	18.83382251433077
1971	19.908254936588804
1972	20.331766558992726
1973	20.368409963867595
1974	21.845404240413234
1975	23.328885294818
1976	22.418056015183254
1977	21.345506699796076
1978	22.265124969360812
1979	23.360742383426235
1980	22.673781275514415
1981	23.430399314560425
1982	22.25523897226966
1983	19.434797023008766
1984	18.74090871496327
1985	17.91785449282837
1986	19.960839661515898
1987	23.173625850199684
1988	24.343648241153897
1989	26.902787038266386
1990	20.663584408809687
1991	18.109013701356865
1992	18.423259030065584
1993	19.28311611464423
1994	20.748084535259046
1995	20.286297620941408
1996	18.640653783809817
1997	19.12290112583917
1998	18.54234850265716
1999	17.016294222603637
2000	18.304488031120048
2001	18.418086500920865
2002	17.92625082380541
2003	16.60475915356877
2004	17.32023332425334
2005	17.056183462108468
2006	17.21029957072458
2007	17.995761339744117
2008	19.38532955454274
2009	19.101958036243836
2010	20.534673650300693
2011	20.608964208334648
2012	20.71671276865306
2013	20.91192187026117
2014	19.873028905062906
2015	17.835807049183032
2016	15.524327325033878
2017	14.558986517153876
2018	15.096911955370402
2019	15.471169743776366
2020	16.561021563954043
2021	17.917849051868025
2022	17.800402392891073
2023	16.53875069275724