Year	% of GDP
1960	4.568469505178366
1961	5.827956989247312
1962	6.180344478216818
1963	7.581818181818181
1964	6.957928802588997
1965	8.519781718963165
1966	8.451910408432148
1967	7.566489361702128
1968	8.658823529411764
1969	9.210394802598701
1970	8.2514386896857
1971	12.584000000000001
1972	10.060390763765541
1973	5.343330477006569
1974	5.676824034334764
1975	5.784402801438577
1976	5.902696904688937
1977	5.018364239003852
1978	3.5211569617840466
1979	2.8188647154702005
1980	2.19261644730701
1981	1.8473824801035443
1982	1.8023504644249344
1983	1.5422684445603625
1984	2.2094093383747104
1985	3.1083988246542757
1986	3.628109888089982
1987	3.1541554959785523
1988	3.1392813519077314
1989	5.844565464354712
1990	4.92869864550594
1991	3.65734044783811
1992	4.941929269054096
1993	4.83817566695075
1994	5.250032660902978
1995	5.073564508430409
1996	6.005079065501336
1997	8.195094024118923
1998	9.203715708834412
1999	12.405406583154356
2000	13.81501195214179
2001	11.745873488010465
2002	12.001239172087185
2003	12.387014452062663
2004	13.058038531135438
2005	15.429561053833096
2006	10.784976638230496
2007	14.41773958051015
2008	12.558950508187955
2009	17.62266422191941
2010	15.951414571756231
2011	16.52994705829701
2012	17.16367348018692
2013	14.543483454591183
2014	15.74141416347355
2015	17.119293261141657
2016	16.531836286358804
2017	15.135744802976994
2018	12.780111361418122
2019	13.04139824933143
2020	12.086490965441584
2021	12.024769747436043
2022	11.270674559930361
2023	9.125268152760766