Year	% of GDP
1970	1.4346727345371078
1971	1.3663954903160076
1972	1.1559929929806723
1973	1.40487440965337
1974	1.0678818231566967
1975	1.3320203009594163
1976	0.9682162389181632
1977	0.9430647731345546
1978	0.9586480281796766
1979	1.0886762824561318
1980	0.8129751729221685
1981	0.749016993872047
1982	1.0562223487131466
1983	0.6791743306809964
1984	0.5477728129658309
1985	0.6076222512490163
1986	0.48662206571148253
1987	0.4438816902392201
1988	0.4846778110073386
1989	0.49426092197398275
1990	0.4717793142076717
1991	0.4388870799051572
1992	0.4499539007626635
1993	0.48513470970089984
1994	0.49578906466160716
1995	0.6520975697482708
1996	0.6365093463715404
1997	0.568807450088451
1998	0.49311466705558743
1999	0.4325003983613063
2000	0.3981752283570243
2001	0.42026908709840627
2002	0.3967439041213163
2003	0.4050648034489772
2004	0.29917666481903854
2005	0.27846971249042574
2006	0.3190240856405144
2007	0.3474877806397514
2008	0.3683199663208259
2009	0.3828387468624322
2010	0.5139319513518837
2011	0.5016442547327982
2012	0.5139683900885423
2013	0.5196482708578875
2014	0.5373677568159194
2015	0.5423600044461225
2016	0.5512707584811111
2017	0.6084643452271654
2018	0.5417701203716785
2019	0.4927486214879825
2020	0.5483742449955664
2021	0.4585323190899442