Year	% of GDP
1967	65.09433337458222
1968	64.18910099794267
1969	62.562271814221695
1970	61.29714477697391
1971	62.000671044992316
1972	61.529476313996945
1973	59.92357531283219
1974	57.015317851113814
1975	57.431066777539854
1976	56.23129542059648
1977	56.68675188664972
1978	57.65100672757409
1979	56.33797319652978
1980	56.69574131786588
1981	55.87980372050342
1982	56.42236254276079
1983	58.26249005378621
1984	58.47740260135459
1985	58.80667841594772
1986	61.015344457811885
1987	60.30060109899703
1988	60.88847753439588
1989	59.86355507295185
1990	61.14185617421278
1991	61.97273840693758
1992	61.31332832459285
1993	62.08165636404453
1994	61.89684399326006
1995	61.03151719407942
1996	60.74759143441101
1997	60.76322327156134
1998	60.73372332138267
1999	61.98573616672903
2000	61.031001162365186
2001	60.71601182725652
2002	59.601221445422695
2003	58.636192398154584
2004	56.97091832499276
2005	56.22458311076814
2006	54.537974596261144
2007	53.81367063745187
2008	52.91849768579515
2009	53.52427166374895
2010	52.20650187046204
2011	51.79799306952842
2012	52.067268611211595
2013	52.24460598796126
2014	52.5927816053671
2015	52.3743258939454
2016	52.86542943952831
2017	52.60419576305924
2018	51.803171344377965
2019	52.316237997064796
2020	51.31520837840302
2021	50.58913543157543
2022	50.77684724241478
2023	52.92799560699171