Year	% of GDP
1970	69.28690844661813
1971	69.56315606668785
1972	68.77922770834853
1973	68.76538229281374
1974	69.23144414218531
1975	73.41752266900194
1976	74.29841215516917
1977	74.9987510420299
1978	73.7834832883499
1979	73.29150137148663
1980	73.98807986178933
1981	75.42296409697225
1982	75.99625934702063
1983	77.21520784965816
1984	76.16386881762828
1985	76.26740926196517
1986	75.68143337371806
1987	75.53632035281466
1988	74.78619431892938
1989	74.13334870850439
1990	73.8555565804855
1991	73.54621957468231
1992	74.57482470950268
1993	75.32408690302441
1994	75.13948791156062
1995	74.52814767105255
1996	75.07377525516475
1997	74.36311675858937
1998	73.85712949156597
1999	73.47553291239103
2000	73.08642509347095
2001	73.08732412658007
2002	72.37860531769171
2003	73.06301761828973
2004	72.75331376424985
2005	73.15600041452322
2006	72.47354003714001
2007	70.76053117782341
2008	71.09740674003652
2009	74.16577855009801
2010	73.9944630665627
2011	73.27630732354758
2012	73.32050558814691
2013	73.57880671865227
2014	73.19929663285536
2015	72.44452256160099
2016	71.91295663309498
2017	71.99839821040543
2018	71.27307730452365
2019	71.01673059804351
2020	70.89566588601816
2021	71.57711568575591
2022	71.79563400048352
2023	72.05209257838034