Year	% of GDP
1970	2.4190717860623128
1971	2.4425785468261028
1972	2.8350092650441896
1973	4.2200785319671565
1974	10.479719550985173
1975	9.73905569412937
1976	10.490118424505782
1977	10.980105454503521
1978	10.314858867263334
1979	14.592210522939531
1980	15.425933732391382
1981	10.765699450804895
1982	9.42748486215984
1983	9.211397959519672
1984	8.643820670811568
1985	8.54521824777057
1986	5.043366526844208
1987	6.37141480358065
1988	5.989016766647827
1989	6.940139380224992
1990	7.827238682293602
1991	4.921723777808174
1992	4.802552059501267
1993	4.901285143022417
1994	4.487463966935107
1995	4.688377899397601
1996	4.855388243331439
1997	4.245404691774905
1998	3.028213366310583
1999	3.522712841397243
2000	5.381976208170392
2001	4.680267280054056
2002	4.545696352311722
2003	4.780921367609659
2004	6.2802927480054125
2005	7.524997242893495
2006	8.034861206151014
2007	8.091033046635387
2008	10.441996163992025
2009	5.618400326692085
2010	7.167918602802264
2011	8.640806578578644
2012	6.703373744155541
2013	5.622527205556821
2014	4.739140665676915
2015	2.695230280346622
2016	2.464682694218008
2017	3.025635139124343
2018	3.61325009740462
2019	3.0368842051619116
2020	2.1588488570401543
2021	4.063069776873321