Year	% of GDP
1966	2.9765674477517416
1967	2.9754959159859977
1968	2.9737609329446064
1969	2.975557917109458
1970	2.9371271225332722
1971	2.96943231441048
1972	2.956081081081081
1973	2.9296875
1974	2.9591214154972545
1975	2.97719087635054
1976	3.6844198300281015
1977	3.9791555410846233
1978	3.766741071428571
1979	3.5028078712439417
1980	4.8806953195216485
1981	5.673139864717434
1982	4.64975329015532
1983	6.649501660244733
1984	8.67684078036501
1985	6.67273451277092
1986	6.2577784691972616
1987	5.993721168631471
1988	4.801699320830655
1989	4.9265539680897605
1990	5.529760458302064
1991	9.21347036053574
1992	8.895895297214395
1993	8.704322984362227
1994	8.024792924987944
1995	8.152714465119063
1996	7.574464445450581
1997	8.020239315298408
1998	7.543534473596432
1999	7.15404622904883
2000	6.766691547782179
2001	6.631611382829246
2002	7.020899377909872
2003	5.916642809355928
2004	5.2620757261822915
2005	6.302016926957102
2006	6.645413213149759
2007	6.5090754785456815
2008	5.591328964434976
2009	4.8299748431086345
2010	4.55083957510618
2011	5.488714202204614
2012	5.7481597985371735
2013	5.611202562653926
2014	6.511781044568461
2015	6.349254346732426
2016	5.586257013290894
2017	4.469292134230852
2018	4.255461446409211
2019	3.787177036810716
2020	2.613383787581325
2021	1.9020718574099236
2022	1.7213198806346266