Year	% of GDP
1965	65.05108252354695
1966	63.4523533739347
1967	65.73938407228158
1968	64.90168249417317
1969	63.25220925152466
1970	62.256130980369626
1971	62.068497411530835
1972	61.679587308844006
1973	60.12027299066612
1974	57.40126167863809
1975	58.01763075870217
1976	56.49489580548158
1977	56.51857215819071
1978	57.51869873610976
1979	55.92786747165329
1980	56.502410181613286
1981	58.74410356414002
1982	59.017899785902685
1983	59.51796741557829
1984	58.82133629346586
1985	59.466940586455365
1986	60.550688795124806
1987	59.40586116852587
1988	59.93317248348941
1989	58.722556775346476
1990	59.92113523901956
1991	60.899703786972836
1992	60.12903006903944
1993	60.743730555433004
1994	60.93481544644613
1995	60.62466695229134
1996	60.78163767947685
1997	60.77751814735761
1998	60.964511612031316
1999	60.56555220097736
2000	59.58756821126276
2001	59.286756077139856
2002	58.32509039857937
2003	57.372500497809774
2004	55.74092827243607
2005	55.01101284490599
2006	53.443062897570194
2007	52.65195057966462
2008	51.70718587980839
2009	52.22039346895196
2010	51.01756077545162
2011	50.53479591664847
2012	50.76588139447363
2013	51.050041372171904
2014	51.46857927063596
2015	51.02039738383133
2016	51.367892302294294
2017	51.03750988208628
2018	50.200971534548245
2019	50.84043400324132
2020	49.74931138788278
2021	48.884243811394576
2022	48.996114804794864