Year	% of GDP
1970	27.22045296198675
1971	29.33094099722152
1972	31.81567579182687
1973	30.022559168260234
1974	29.90935258977583
1975	28.069227467646947
1976	27.413729813856396
1977	28.272178218718942
1978	26.302681601201545
1979	26.575834158846313
1980	27.29968027961503
1981	27.20902468716907
1982	24.544319128025094
1983	23.679855204811847
1984	23.182603563978816
1985	23.81160543787837
1986	23.60310928337002
1987	24.169370000946216
1988	24.915295351705044
1989	25.170674243861008
1990	25.367617443643375
1991	26.442438023668906
1992	26.030971351374166
1993	25.518194232204916
1994	26.161490537650632
1995	25.299057945883202
1996	25.791844544630223
1997	25.4194119489777
1998	25.470218202392186
1999	24.959242205737166
2000	25.61168088159123
2001	24.79662177199981
2002	23.530570151386275
2003	24.108115647526553
2004	23.591508352484148
2005	23.05211574706889
2006	22.600755830918352
2007	22.917027683520665
2008	23.276465624832028
2009	22.41300826172333
2010	21.59672377489653
2011	22.471715448678623
2012	22.64929278565803
2013	23.040197560928924
2014	22.66055247177312
2015	22.696707457706864
2016	23.09628742873306
2017	23.628540758687407
2018	24.095129262390834
2019	24.91439257067386
2020	24.97849895478587
2021	25.82738210718934
2022	25.297088012896808
2023	24.44652819339783