Year	% of GDP
1964	5.716440448822294
1965	5.746007012076354
1966	5.611483967188665
1967	6.116389548693587
1968	6.093494948583635
1969	5.431990016883212
1970	5.524732154079255
1971	5.966705211199851
1972	5.9838655664225175
1973	5.494217655349005
1974	5.2807636020214686
1975	5.145451827661232
1976	5.2641619929920935
1977	5.327041246555391
1978	5.169392029791604
1979	4.80992358873516
1980	4.86369536996971
1981	5.954960532425321
1982	6.4973511997507005
1983	6.484195938382816
1984	5.513830371862979
1987	3.774528385869713
1988	2.8247923537348902
1989	5.54460250729166
1990	4.323785904498608
1991	5.038135464462609
1992	6.818496367689368
1993	9.49367523796645
1994	9.395517298289729
1995	8.635075889944753
1996	8.084542973858849
1997	4.790236899467818
1998	3.8300167312358573
1999	2.9674489775640387
2000	3.3457564841931817
2001	3.598781190423773
2002	3.2698269925263763
2003	2.791390239389779
2004	2.630103171640526
2005	2.524644910692342
2006	2.653437572014021
2007	2.5072749078763694
2008	2.490173542610589
2009	2.1587489429101905
2010	2.17721787057592
2011	2.2621277170998115
2012	2.0243504312982
2013	1.6412272942046238
2014	1.5329754286900488
2015	1.7355547235337172
2016	1.9240225408946265
2017	1.9742898641471958
2018	2.0990954033662015
2019	1.9515598253512882
2020	1.884905711021804
2021	1.8777708087186693
2022	1.7854969662198579
2023	1.5695840725409027