Year	% of GDP
1975	23.144133014000985
1976	23.045554038627667
1977	22.349652338251992
1978	23.03527674380823
1979	24.01602736004768
1980	24.20298897703301
1981	23.38245724643392
1982	22.657290376842745
1983	22.281789244429554
1984	22.29517396184063
1985	21.71001802729848
1986	20.758298374619173
1987	21.142713686573337
1988	20.70695879983838
1989	20.454995284721335
1990	19.509889070900076
1991	17.159000678949123
1992	18.105258191597272
1993	19.83362113221636
1994	20.990864913111988
1995	22.232594952764615
1996	21.39337597837054
1997	21.65837898327723
1998	22.910337500207515
1999	22.826909136751866
2000	24.15018835842336
2001	23.60193046989518
2002	22.867475721616852
2003	21.947426342183473
2004	21.54285138386727
2005	21.2153964793821
2006	21.810673406710354
2007	22.129982039001025
2008	20.789128252644584
2009	16.668775825735775
2010	16.96900761654699
2011	16.26077031081122
2012	14.460522192432238
2013	14.504627522379002
2014	14.455018680792858
2015	14.684580268230954
2016	14.565691115218051
2017	15.200993367240976
2018	14.594238034455287
2019	14.412277264047896
2020	14.263268889841118
2021	14.656671879488078
2022	15.606286446484141
2023	14.979198559207566