Year	% of GDP
1965	18.93542359750262
1966	20.135123504604525
1967	20.413849620979306
1968	20.935665808145913
1969	20.964360587002094
1970	20.188539349645165
1971	20.578019087444776
1972	20.732440730541576
1973	19.81529757612735
1974	19.905395346603598
1975	20.030570238064975
1976	18.49262036814213
1977	16.630178518439422
1978	18.107648435401988
1979	17.782449035767257
1980	16.492630485305668
1981	17.061560743537722
1982	16.576741788210605
1983	16.593008828160173
1984	17.068201472579524
1985	17.83635145285644
1986	17.51286541173666
1987	19.837375302731463
1988	19.86235643980257
1989	20.842804790514318
1990	18.716651315297955
1991	18.79607277697661
1992	19.667210886408576
1993	20.49121912631904
1994	19.959550141000893
1995	19.16018309501073
1996	18.656927212524486
1997	18.43352487768211
1998	18.639911587712817
1999	19.368844765826047
2000	19.532868241525147
2001	19.24834791414696
2002	18.880111111406784
2003	18.09649281198468
2004	17.55758252377816
2005	16.62573139202613
2006	16.350549910030633
2007	16.22631416520934
2008	16.864116031176042
2009	16.178908532282822
2010	16.140952475943088
2011	16.246774516386985
2012	16.17341129656343
2013	15.977292487458483
2014	16.07623795725048
2015	16.387493258879505
2016	16.28568464121385
2017	16.08462884505062
2018	15.687842633887824
2019	15.558677942974148
2020	14.740427724358268
2021	15.069307244326888
2022	15.034268115334934
2023	14.003302012428406