Year	% of GDP
1960	6.467600049560154
1961	6.410043350885773
1962	7.423697001106551
1963	7.087661579390948
1964	7.651790163000925
1965	7.993035770813549
1966	8.81996974281392
1967	8.690114343609784
1968	9.02960863697706
1969	9.907343955912303
1970	9.440291208180504
1971	8.633804208238665
1972	8.816901408450704
1973	9.43566962816716
1974	10.080152153240048
1975	7.670936146166886
1976	7.073918195562456
1977	4.6384214743589745
1978	4.487119606222829
1979	3.0917123455780087
1980	3.9353693124753937
1981	4.008300306587901
1982	2.9624569460390355
1983	3.1857015325100426
1984	2.6456133420172545
1985	3.4032888093063827
1986	2.9017475367087853
1987	2.8101552884882897
1988	2.7824330682638645
1989	3.311257020133508
1990	3.588145204023705
1991	3.528530343459204
1992	3.8274056749298846
1993	4.313397662852256
1994	4.333629527279008
1995	4.579786028986544
1996	5.278933383686516
1997	4.8234748755365775
1998	5.611752584128662
1999	6.0202430636298
2000	5.67423418373572
2001	6.622313958410418
2002	7.702311888241149
2003	8.270646028191022
2004	7.6129683723199575
2005	8.471884371672289
2006	9.970363587325423
2007	10.098331877715403
2008	13.785904423222178
2009	8.202523933315906
2010	10.04823403023722
2011	11.358432816952519
2012	11.871474878931688
2013	11.861151457524494
2014	12.297066348113733
2015	12.815687912061415
2016	12.503523550462347
2017	12.311584129900083
2018	12.393820649672717
2019	12.705262227312561
2020	13.026617493402862
2021	13.27622915453627
2022	13.371705240501994
2023	12.763783213927374