Year	% of GDP
1960	8.022537050906493
1961	8.71030881696685
1962	9.376743157496547
1963	9.727878253623489
1964	9.580969655041125
1965	10.378810646010196
1966	11.352838477506813
1967	11.15251443816855
1968	11.763419385344323
1969	12.24763643666211
1970	13.039614094381243
1971	14.051548129231588
1972	14.604405763294766
1973	13.844250350947632
1974	12.346783057639737
1975	13.232424021938542
1976	16.87778143551153
1977	17.562193716839666
1978	18.674966207986024
1979	19.98512993141443
1980	19.53419050578521
1981	20.201320326319003
1982	21.621870466450577
1983	22.184581059664016
1984	23.18237751486652
1985	23.81102198668147
1986	25.032468050549326
1987	24.50343029661203
1988	24.405243120218792
1989	25.335341387061103
1990	23.92220829417505
1991	22.439606209739978
1992	23.193348552315964
1993	22.67908080837271
1994	22.68516952375618
1995	22.824942030495375
1996	23.321085264452183
1997	23.52270259082428
1998	23.73034816051929
1999	25.164603395945527
2000	25.99945034780152
2001	26.46885725606944
2002	29.38154531444664
2003	29.26135824534375
2004	33.32436847564377
2005	36.59902445559017
2006	39.60298278775593
2007	41.66581285946611
2008	44.584091437308345
2009	43.6064055947066
2010	46.0634069659031
2011	46.38663983613234
2012	46.433893530448685
2013	46.5434451285963
2014	46.47322668580254
2015	46.4458766319834
2016	44.19299070027482
2017	44.539550952073895
2018	45.88452981792345
2019	46.44820351870868
2020	49.38315223965902
2021	46.42753600324372