Year	% of GDP
1960	15.57209175314036
1961	16.34934832609251
1962	15.138148624640078
1963	17.478714638835484
1964	19.62393162393162
1965	19.03774001324211
1966	19.70719339140392
1967	19.267792330755878
1968	22.150452934226074
1969	23.92191790989386
1970	22.29822588705647
1971	24.33273098912818
1972	25.745739623585667
1973	24.380785589191895
1974	25.153650464891147
1975	25.32883578939434
1976	23.43763982937088
1977	20.66773042302586
1978	18.83968965587832
1979	16.204496448503296
1980	15.669515289869787
1981	17.339307843987132
1982	15.960545065906661
1983	15.789473684210526
1984	15.50632911392405
1985	15.281501340482572
1986	14.73922902494331
1987	14.36893203883495
1988	13.961039772727274
1989	12.597402207792207
1990	11.377870563674323
1991	11.11111111111111
1992	10.424155283968368
1993	10.309278350515463
1994	10.285714285714285
1995	10.53921568627451
1996	10.37489102005231
1997	11.320045129748026
1998	11.308281141266527
1999	11.605981794538362
2000	11.202587474272272
2001	11.318650683022025
2002	12.589073634204276
2003	12.67065868263473
2004	12.754996909128375
2005	12.739090064995356
2006	12.287518212724624
2007	11.331901181525241
2008	10.887772194304858
2009	11.350988293993474
2010	11.163600198906016
2011	11.450660053971264
2012	11.178121454588881
2013	11.352397333906687
2014	11.849765258215962
2015	11.759891975940096
2016	11.426884180999483
2017	9.579036625728275
2018	7.942222793707943
2019	7.285561115082202
2020	7.5399018301205984
2021	7.558043553301016
2022	7.268090532355755
2023	6.788506607322213