Year	% of GDP
1970	32.030388797404896
1971	30.62341127558631
1972	30.15246410298371
1973	29.483095632585442
1974	29.738374295866933
1975	26.269515565649648
1976	26.287596509144702
1977	24.87548648663043
1978	24.344387635398647
1979	22.873338704167782
1980	22.429413465969724
1981	19.63383447323201
1982	19.16458901854804
1983	18.979830628779393
1984	20.153757269869477
1985	19.893033971217342
1986	20.897899879545225
1987	21.391887655691512
1988	24.055380896636308
1989	25.33274811208858
1990	25.587505398396043
1991	24.348141330621242
1992	24.896040917956515
1993	25.04447404110966
1994	25.582769353223885
1995	25.640947678525873
1996	24.80275294219764
1997	26.184563691006087
1998	25.98822648413447
1999	26.6451403092598
2000	26.64761655128943
2001	26.280903505363852
2002	26.324847880686207
2003	26.322171890347164
2004	27.561209717549072
2005	27.717670372883806
2006	28.01303392418611
2007	28.738436680869416
2008	26.609562490351625
2009	24.435251482944693
2010	24.829232574425134
2011	24.40794131837886
2012	23.752876612579747
2013	23.22604866625942
2014	23.954989946732447
2015	25.04596816809351
2016	25.44641725722781
2017	25.49539928201342
2018	25.080447637521768
2019	25.637121711921335
2020	26.13643864790357
2021	27.475705682701218
2022	25.432193393992247
2023	24.39571889052639