Year	% of GDP
1970	32.283404348301104
1971	31.60344810830248
1972	31.90832619226666
1973	32.81663690659442
1974	33.81655683306845
1975	31.66326251534778
1976	30.52993335678848
1977	29.00555736577242
1978	30.299687970248517
1979	30.931329371494833
1980	34.31266278956513
1981	34.97217907307411
1982	33.81858653311074
1983	34.164485374407604
1984	36.27049908585825
1985	34.719648934392126
1986	29.506867017693395
1987	29.280928184175124
1988	29.796983514133757
1989	30.86972719421537
1990	30.834648021433303
1991	29.902529721410424
1992	28.11658690949252
1993	28.29222785570744
1994	28.87236665247503
1995	30.143863080887684
1996	31.56412609797169
1997	33.11730071670142
1998	30.138534291555345
1999	31.845462520421048
2000	38.73127069070168
2001	37.362163211013154
2002	33.75096298616816
2003	32.45216566764875
2004	35.05787912800182
2005	38.83693692205002
2006	41.34410489417139
2007	41.04794815975432
2008	43.43399557993772
2009	36.45155657716976
2010	37.04967200196826
2011	39.169815322735914
2012	39.947711796055216
2013	39.077446296275326
2014	37.5279273421014
2015	33.63733046917704
2016	30.48585782893966
2017	31.908610717152015
2018	34.165757744617
2019	31.99750231933448
2020	30.418841134454695
2021	39.93794073032155
2022	50.00895204959891
2023	40.55239606453096