Year	% of GDP
1960	77.21349693251534
1961	76.87514124293784
1962	77.15157894736842
1963	74.70985849056603
1964	74.74856573705179
1965	73.13626373626374
1966	73.22039473684211
1967	73.25753012048193
1968	74.10272479564033
1969	72.98325123152709
1970	71.96436936936938
1971	73.22071428571428
1972	71.78166371681417
1973	70.47599131693198
1974	69.81601111111111
1975	68.72031818181819
1976	68.07879649890592
1977	66.31078961600866
1978	66.06047068891742
1979	64.40283898305084
1980	61.649815957317614
1981	61.0011243614943
1982	57.97279310569537
1983	58.02110692696435
1984	60.12443967040545
1985	60.96453570591971
1986	65.85321593281176
1987	62.588356935259156
1988	68.20600087414233
1989	69.34357394226711
1990	69.96679255670931
1991	70.7962728484782
1992	71.90090315380311
1993	71.07404487117456
1994	70.23962562668903
1995	68.79998710010716
1996	68.84783163415311
1997	68.881640067563
1998	68.06949246704171
1999	67.75292454105774
2000	69.00919052899852
2001	69.25700439571155
2002	69.65921483275272
2003	70.64951357595174
2004	69.91887675839936
2005	71.22674359307972
2006	69.27428098169881
2007	69.3229644300248
2008	70.27469908603365
2009	69.11922676465146
2010	70.54294556390374
2011	69.90249657365266
2012	69.16299813413735
2013	70.74787945334698
2014	70.80840719365867
2015	69.1492541424672
2016	68.93057536692307
2017	68.23570050739059
2018	67.39101095377328
2019	67.61239762703089
2020	66.11052129020767
2021	68.15230489949307
2022	70.62711244171987
2023	70.366201438421