Year	% of GDP
1970	29.303009190625534
1971	28.365166359885695
1972	27.82212720174369
1973	28.88339612564335
1974	29.079844603027787
1975	25.724824038410794
1976	26.766996233456915
1977	25.945675334681585
1978	25.033963821469698
1979	25.8115335937075
1980	26.068907373578256
1981	23.680151428250497
1982	23.366818597250404
1983	22.883885781739277
1984	23.032478110835235
1985	22.95384662370435
1986	23.09758613523811
1987	23.37451056237423
1988	24.59473732975851
1989	25.676941314974496
1990	25.2428581254892
1991	24.584117677675476
1992	23.57902800938768
1993	21.759689561281263
1994	21.994387442976205
1995	22.198514840589542
1996	21.638292383595903
1997	21.505022712612107
1998	22.014062294602258
1999	22.066549381211374
2000	22.65733447072261
2001	22.1746948307438
2002	21.458442556733207
2003	21.44749968971619
2004	21.679357078019613
2005	22.0130031777695
2006	23.012546779347073
2007	23.90665981613754
2008	23.682145716869755
2009	20.2939372484261
2010	21.179624150838865
2011	21.975167412825737
2012	20.978343838580336
2013	20.687345687885806
2014	20.928267265672552
2015	21.149528127033978
2016	21.391258074134164
2017	22.05395683276709
2018	22.21683504755334
2019	22.69036362573809
2020	22.63052555461731
2021	23.10533290826093
2022	24.00143097940305
2023	22.861946724557633