Year	% of GDP
1970	15.82371310874236
1971	16.576112379020056
1972	16.794452734819618
1973	16.85407881994334
1974	17.5203822822724
1975	18.758357393297917
1976	18.700920447518925
1977	18.828040051591127
1978	19.01363121692569
1979	18.959951739181953
1980	19.518411051761777
1981	20.05171076571896
1982	20.03633562661483
1983	20.01969092742301
1984	19.733710529637175
1985	19.636802757087327
1986	19.54070039543702
1987	19.64956124238209
1988	19.30620219515006
1989	19.143519456633097
1990	19.345691555715717
1991	19.407304745051235
1992	19.742578953007282
1993	20.13285773860708
1994	19.820556928750804
1995	19.39287200068231
1996	19.3982457305718
1997	19.12696796385709
1998	18.70493089103585
1999	18.78734557637371
2000	18.548298791063953
2001	18.82793492268554
2002	19.316824644005965
2003	19.661758106172762
2004	19.496015223408605
2005	19.468678759978364
2006	19.334274610127103
2007	19.071497764350234
2008	19.469419095120145
2009	21.181622206056915
2010	20.650371250825742
2011	20.02650364280061
2012	20.017565966408675
2013	20.053530174513647
2014	19.928878870870925
2015	19.674261442159747
2016	19.766005267069374
2017	19.521049645536632
2018	19.438475251919765
2019	19.611352980996525
2020	21.51920315173109
2021	20.776850879383822
2022	20.079959025753897
2023	20.15863802169925