Year	% of GDP
1970	32.907243526712556
1971	34.14579628171861
1972	31.151956069323727
1973	33.2006957699649
1974	36.498447256598325
1975	37.44682832021135
1976	38.88761415263182
1977	38.106422649433405
1978	30.153308704440988
1979	28.82664912456749
1980	28.54131123950999
1981	27.987222372901787
1982	28.947752426884314
1983	26.575589838476883
1984	27.731862282471774
1985	27.704737892112757
1986	33.12459615886939
1987	31.698573260205965
1988	30.641304413297117
1989	27.646210466304282
1990	24.764589703958467
1991	22.312606080089914
1992	21.635532466765795
1993	22.15580762706614
1994	23.01887339201687
1995	24.20566938486489
1996	22.900863965289684
1997	25.198976641491583
1998	28.251852093740304
1999	24.57908363686898
2000	21.81803844859164
2001	20.550223781330025
2002	20.330212352435357
2003	19.428481708274454
2004	21.5094822895293
2005	22.42231866510235
2006	23.929297473876012
2007	27.074741099596896
2008	25.78314999037044
2009	24.295695557508427
2010	24.98868674508732
2011	25.44598101944925
2012	25.872034359095725
2013	27.327619821152076
2014	27.209992105702618
2015	26.91884148626454
2016	27.726421558166063
2017	27.552832397912436
2018	27.726843038085814
2019	29.611444403947022
2020	31.352115727667318
2021	25.0880506650083
2022	21.69400457938506
2023	25.843250031831055