Year	% of GDP
1960	8.0812930068811
1961	8.361153262518968
1962	9.243937232524964
1963	8.886882497097897
1964	9.730679156908666
1965	9.941081949651847
1966	10.01871736774702
1967	9.822139633660738
1968	10.080117724002616
1969	10.308978553253361
1970	10.754816574294008
1971	11.675824175824175
1972	11.026212458877216
1973	10.297621626305073
1974	10.6994275148455
1975	12.035928143712574
1976	12.779811642400022
1977	12.467018469656992
1978	13.316694892592922
1979	13.376036171816127
1980	12.770509930065913
1981	13.27273394585204
1982	14.768000343067886
1983	14.405538295033635
1984	15.9487888057377
1985	16.326161256865216
1986	16.78041737760861
1987	17.405749173238362
1988	16.846878860179025
1989	16.82139769579562
1990	17.588853422133095
1991	17.669952322279958
1992	17.900558549917566
1993	18.120560976408488
1994	18.188868875008225
1995	16.526930351506174
1996	17.42472489821392
1997	17.49187681571235
1998	17.100026181797208
1999	16.810531188112915
2000	16.567215410840326
2001	16.621851216478927
2002	16.780388029590558
2003	16.866320971216783
2004	17.004438981508677
2005	16.148898531591122
2006	15.860740393182112
2007	15.886497857535812
2008	17.072453816332075
2009	17.793633136891852
2010	17.996063602882035
2011	18.195143185476326
2012	18.820545260648768
2013	19.081374554672205
2014	19.31406259409782
2015	18.985071328630827
2016	19.307561654552334
2017	19.236077127953113
2018	19.35222614246301
2019	19.580080039868054
2020	20.574893562626777
2021	19.351323377435417
2022	19.14687507454788
2023	19.70742366127903