Year	% of GDP
1960	29.724057285344678
1961	28.312031995987404
1962	26.717615927419352
1963	24.16799180362571
1964	26.923128493571173
1965	26.51209677419355
1966	28.018892009190704
1967	29.275920134712536
1968	34.87599645704163
1969	35.15664349753198
1970	31.539384208045806
1971	32.08827199001871
1972	27.336529775554162
1973	31.5018315018315
1974	24.32382363838459
1975	25.769113435206638
1976	18.213173795177784
1977	12.226246902015601
1978	15.04521819860817
1979	19.218636820337874
1980	15.905805451383797
1981	20.298102470368764
1982	20.86891238025899
1983	22.25876676973679
1984	23.12229466521974
1985	24.303811815567126
1986	16.944172822060015
1987	20.649065330925726
1988	23.622141340759047
1989	26.61116545084289
1990	25.884392299553216
1991	24.36427587592409
1992	29.8285589091991
1993	25.261932479627475
1994	24.231858671973306
1995	25.259573952619103
1996	25.554000976469986
1997	25.694773687873866
1998	22.6006625733252
1999	21.26335083664282
2000	23.463337888702597
2001	25.880361200502218
2002	27.33771822634974
2003	26.247635488788085
2004	26.467210890034863
2005	26.94237700563778
2006	28.42251280063646
2007	26.571194356120824
2008	24.350539980189364
2009	21.056267758798555
2010	20.20652665163635
2011	21.436332012038346
2012	19.933172313765958
2013	21.259887605300204
2014	22.473787261585194
2015	21.35192570602593
2016	21.288150030522864
2017	22.531839949341038
2018	23.311518899238425
2019	24.269095488935207