Year	% of GDP
1970	0.9734518457945399
1971	0.9289145823403534
1972	1.0637945367885724
1973	1.6256996828235288
1974	1.2677466775849138
1975	1.3935820427985612
1976	1.3195622977719026
1977	1.7394176797300047
1978	1.6283732803383635
1979	1.5963660724119255
1980	1.5476977646459864
1981	1.0929051872473274
1982	1.5171364085137722
1983	1.1446331533215222
1984	0.8588962438051795
1985	0.7476059942965516
1986	1.0331235320301975
1987	1.102963053463658
1988	1.0758581933317515
1989	1.0646252311342168
1990	0.9832966951198789
1991	1.093336119077529
1992	1.1577212593096633
1993	1.0177203762302525
1994	0.9850990048948083
1995	1.171970335168665
1996	1.0460397545741182
1997	0.8889730564742608
1998	0.8534698698532234
1999	0.5880694129226464
2000	0.5242196100858616
2001	0.5142512430093041
2002	0.5792457796040108
2003	0.7249162407649189
2004	0.5207033668229962
2005	0.4708301842332431
2006	0.4713711115642174
2007	0.533396417317897
2008	0.558898038500575
2009	0.5221282214385946
2010	0.48396133324801827
2011	0.4439336154007198
2012	0.4387200853471611
2013	0.43211498238236823
2014	0.47111360382566553
2015	0.442258016079579
2016	0.4635181301982825
2017	0.4549272718980232
2018	0.359981498446297
2019	0.3276042863896281
2020	0.361236403949645
2021	0.30720011784217366