Year	% of GDP
1970	0.5080787829873206
1971	0.4428233604326551
1972	0.4577582392839645
1973	0.6293745891209067
1974	0.5327115815990826
1975	0.6031045403800704
1976	0.4809347944490485
1977	0.6773072927499749
1978	0.5951685803909983
1979	0.6308013351483197
1980	0.49851766345670845
1981	0.3713318841463179
1982	0.7743571357320206
1983	0.3484002405953642
1984	0.22878748843699245
1985	0.18015926676142163
1986	0.24006074312035
1987	0.2724620633070941
1988	0.24028853358605723
1989	0.503534678197177
1990	0.556611656290175
1991	0.5365552846998636
1992	0.5073309361256503
1993	0.41805471983135917
1994	0.34986964803458503
1995	0.4339479371855916
1996	0.34807462364425523
1997	0.3218719771230845
1998	0.2808243837013921
1999	0.3019756865698463
2000	0.22819888451151993
2001	0.23439230590781532
2002	0.3012075666944583
2003	0.3293964518989818
2004	0.26053680949303476
2005	0.23157798956884557
2006	0.2695158278698189
2007	0.2727700219123611
2008	0.261649829969281
2009	0.28270054291773594
2010	0.3691681731549696
2011	0.30646632981898514
2012	0.3141073287674477
2013	0.3566003853650213
2014	0.3759698760314211
2015	0.4089665524268607
2016	0.4938705354068486
2017	0.45719303516531323
2018	0.4410337466204122
2019	0.3731071208952561
2020	0.5066725926566781
2021	0.3979182506092415