Year	% of GDP
1960	26.352034514802693
1961	25.86624172793186
1962	25.826896902416756
1963	24.463894663780664
1964	24.56903446937149
1965	23.520426446713685
1966	23.18114090015581
1967	23.20075911865256
1968	23.27813258583753
1969	23.149965109720704
1970	22.519734003210484
1971	20.424548988001217
1972	20.094208719783836
1973	20.227505114662826
1974	19.419327159509727
1975	20.33847887089534
1976	20.376192226585925
1977	21.885480102797878
1978	20.413726289312184
1979	18.501404936883596
1980	17.804639136256988
1981	23.01905143698064
1982	24.49471891363942
1983	21.99746353836398
1984	21.207906955915217
1985	18.86663183774438
1986	20.89773959127956
1987	18.070637752896495
1988	17.94864683418787
1989	17.220393852514153
1990	15.787421160150018
1991	11.944556990087086
1992	11.900149109397384
1993	11.828230011597718
1994	12.319967978545554
1995	12.758127450194658
1996	12.102496408445306
1997	12.503091336030103
1998	12.618968848322002
1999	11.109692966176405
2000	9.24882318734231
2001	8.379536270073837
2002	8.427750290184372
2003	8.840078008715135
2004	8.852408768002377
2005	8.622236946267266
2006	8.42982819692116
2007	7.915311043486023
2008	6.976960469126832
2009	7.049629700582089
2010	6.485189408261216
2011	5.599872122179125
2012	5.1308419143553925
2013	4.7833509330236685
2014	4.887883789744114
2015	4.749110429001186
2016	4.9143557868633
2017	4.699776331544269
2018	4.4838283372217305
2019	4.202051163035753
2020	4.344225560331159
2021	4.366713259371273
2022	4.140073620900854
2023	3.8004765728883916