Year	% of GDP
1970	18.194544253034127
1971	18.191788219270617
1972	17.911811170845127
1973	17.085522999047623
1974	17.504005474408
1975	18.056102098773756
1976	17.326615002393115
1977	16.972344991650377
1978	16.313007769418252
1979	15.916670839490616
1980	16.37316149511984
1981	16.300918185235727
1982	17.13313782267561
1983	16.92571269166166
1984	16.234567605836762
1985	16.396387750745507
1986	16.572933490146916
1987	16.453272450443183
1988	16.15281573170322
1989	16.14990685422448
1990	16.51251467228878
1991	17.015445864825658
1992	16.779024993974584
1993	16.2880933101244
1994	15.75817161426191
1995	15.439301567775644
1996	14.980023946059609
1997	14.628358675866043
1998	14.369334202888123
1999	14.379809958417875
2000	14.368257240826935
2001	14.860234559086999
2002	15.365902778112368
2003	15.580658404590794
2004	15.488207926647776
2005	15.379351453041329
2006	15.373110359440451
2007	15.561832236587883
2008	16.292475277545396
2009	17.253148668992903
2010	17.149309064274153
2011	16.617911091249738
2012	16.03957685213093
2013	15.55457000603721
2014	15.082477270551706
2015	14.753541703982478
2016	14.630541243228198
2017	14.378051727498498
2018	14.370414285631645
2019	14.506959402812909
2020	15.466353975659603
2021	14.82935558688871
2022	14.395424857055744