Year	% of GDP
1970	0.998281303746409
1971	0.985647597673494
1972	1.2745027971707952
1973	2.0386597324101654
1974	1.6293146967007865
1975	1.691833314745216
1976	1.8336718013134556
1977	1.9486089564221973
1978	1.9401756702603539
1979	2.303372979560428
1980	2.2075100909612235
1981	1.5222132444007748
1982	2.092389329677384
1983	1.8258697459753173
1984	1.1772751968773412
1985	1.0716391755443126
1986	1.3540167562207492
1987	1.5944931588194464
1988	0.8577356340525846
1989	0.8909931946260125
1990	0.8060162551384451
1991	0.8391093399103056
1992	1.145828694621372
1993	1.034951179534326
1994	0.8313567789182212
1995	0.8090345992434494
1996	0.6944709927317236
1997	0.5810404228131735
1998	0.4983519973993803
1999	0.48606014511592077
2000	0.4334995431562365
2001	0.4097977700174233
2002	0.4098395486101496
2003	0.4753246507253755
2004	0.34402380856035464
2005	0.31000375067884156
2006	0.32198042077260686
2007	0.3598332310239863
2008	0.3473730702418682
2009	0.3209431513108118
2010	0.3304786677468292
2011	0.2846822725057116
2012	0.2678531753260682
2013	0.2553818741897547
2014	0.27940773573991795
2015	0.24286175940381974
2016	0.2548016646365799
2017	0.2787404815674585
2018	0.24998069028107864
2019	0.21763038333701443
2020	0.23450266086800114
2021	0.19064143253758117