Year	% of GDP
1960	29.95324988824318
1961	27.537543684363637
1962	27.79267364275466
1963	25.756807541316718
1964	24.615522128833568
1965	25.903018307768434
1966	22.37015713086242
1967	20.46032975544982
1968	20.621442567643218
1969	18.392475416844807
1970	25.45374707259953
1971	24.61209964412811
1972	22.32570341706565
1973	24.347967833079764
1974	26.43136595010727
1975	27.48993490612183
1976	29.04678343210939
1977	33.81492570110144
1978	34.77088948787062
1979	33.71065340637944
1980	32.218497752792096
1981	30.459384742073997
1982	27.356456196215163
1983	26.328730849252885
1984	28.804001404914597
1985	26.01200923787529
1986	23.718198736307208
1987	25.192275432969204
1988	26.076438630159203
1989	27.26020381831824
1990	30.180804514829823
1991	28.741086895218142
1992	31.77037408031828
1993	33.801006875982104
1994	33.812883795787826
1995	35.59762913090096
1996	34.97333777703716
1997	36.53811808076633
1998	36.24381867727061
1999	35.48370471706558
2000	39.01570088642501
2001	37.3311884768914
2002	34.913330197833595
2003	34.653502832422845
2004	35.33090273244115
2005	32.33687298748931
2006	30.128527093797214
2007	29.114999687036143
2008	24.841487098820544
2009	21.328366243782952
2015	19.893383820638977
2016	19.824036042977422
2017	20.224200036555818
2018	21.446248613987528
2019	21.823532894421703
2020	15.45764244911274
2021	16.921417512643952
2022	21.559021542419817
2023	20.392021415823226