Year	% of GDP
1970	79.37671287461868
1971	87.91805842845139
1972	85.82080848524922
1973	79.80431160084103
1974	72.45003448141256
1975	88.2910986769998
1976	86.89846574198535
1977	88.81856189178367
1978	90.95107612756952
1979	88.76075100074992
1980	93.04308191313127
1981	95.18383091176538
1982	93.87653033505072
1983	92.13386960135294
1984	90.65438847744005
1985	87.94335567991322
1986	87.8957046464247
1987	92.42331672725408
1988	90.90315749255066
1989	87.55149518603133
1990	88.4407184162558
1991	89.61819168797132
1992	85.12685466502312
1993	83.42622458334392
1994	81.40876721987496
1995	80.58679448937792
1996	79.67471036319786
1997	79.64685423716699
1998	81.17577292129984
1999	80.04959080939192
2000	77.12255362790621
2001	78.36381902780202
2002	77.96575791526752
2003	79.28184108405874
2004	77.75815770665747
2005	76.42873980391524
2006	70.39892412723962
2007	68.33160905812865
2008	69.22395720482697
2009	67.6825355153934
2010	68.25216262685066
2011	69.7362070015012
2012	69.3632569218255
2013	67.76684446191099
2014	67.86367028823864
2015	67.4610781247876
2016	66.24014189564387
2017	68.29898489884197
2018	67.42122956900835
2019	69.52506961666757
2020	66.03087641429542
2021	66.69584081781228
2022	65.95725728437101
2023	69.15945709588681