Year	% of GDP
1970	15.706325794821371
1971	16.46112131549025
1972	16.762560990538816
1973	16.933224555138228
1974	17.142021159869397
1975	18.135106983456406
1976	18.867626288120988
1977	19.121773288439954
1978	19.728398807644524
1979	19.338306072465222
1980	18.690834142371944
1981	18.587009229808256
1982	18.998330550918197
1983	18.95400271762699
1984	18.185892601177525
1985	17.89591786657942
1986	19.019542473776106
1987	19.977507347914706
1988	19.93136410454099
1989	20.020715854119743
1990	20.284159330862654
1991	21.005914538525506
1992	21.95197843297138
1993	21.973553923832213
1994	21.62504653148203
1995	20.962624255298827
1996	20.36500447532503
1997	19.978008306026247
1998	21.356933116664933
1999	21.012062729033538
2000	18.863558654908914
2001	20.03193958287058
2002	21.626319810503503
2003	21.941388896585483
2004	20.743930926451927
2005	19.373451768795473
2006	18.567638303524113
2007	18.649345344877116
2008	18.40046374423895
2009	21.49901299825553
2010	21.226583289545246
2011	20.790418547941957
2012	20.609691587425356
2013	20.97905243282686
2014	21.722759613584262
2015	23.097850828529833
2016	24.218822959305655
2017	23.805762264967413
2018	23.112939424550987
2019	24.10350806811462
2020	26.134057473837775
2021	22.449340657841212
2022	18.174833003106063
2023	21.93137399610306