Year	% of GDP
1967	14.144535440417835
1968	14.142631798647272
1969	14.283951225317438
1970	13.1646327824225
1971	14.07531297938509
1972	15.536239633222035
1973	15.772092331384291
1974	12.06718138501124
1975	13.49886473499784
1976	12.293553756339955
1977	14.42494717394586
1978	15.917835926386498
1979	15.474526337205555
1985	14.514015615809914
1986	19.052340047745584
1987	19.344388258752065
1988	18.087274214057132
1989	19.071235634248854
1990	17.56171349858024
1991	18.45952685825365
1992	19.15435786857183
1993	18.126835459889435
1994	21.60657679863265
1995	22.219129532468436
1996	22.29374931854018
1997	22.112101230342496
1998	17.72840386123604
1999	16.320781255527884
2000	17.667666802215265
2001	17.18309197967816
2002	17.193389297927673
2003	18.96748221031562
2004	20.18723796020698
2005	20.24107065607587
2006	20.207121330592265
2007	20.498181206215943
2008	23.03287467599257
2009	20.211284802349887
2010	20.774450225272027
2011	18.656617344845113
2012	14.81874452959215
2013	16.910585637927028
2014	17.91016599525744
2015	18.355651813637355
2016	18.58528389667122
2017	18.249860880802448
2018	18.697891106717027
2019	20.042554370713365
2020	19.863508264913346
2021	20.146666971540398
2022	19.84419707383574
2023	20.09155758479655