Year	% of GDP
1976	0.5813490326937897
1977	0.4867899519180248
1978	0.6099085032328536
1979	0.6211129070188419
1980	0.462748671538776
1981	0.4826121117101369
1982	0.5891393061461646
1983	0.3941785825428064
1984	0.44367111194196934
1985	0.5526105835368987
1986	0.3521668170300693
1987	0.28087730205682165
1988	0.37324288214683016
1989	0.3712216049841278
1990	0.31559204261312906
1991	0.27885476971210293
1992	0.26043013257422987
1993	0.25746019604386233
1994	0.24027831392821775
1995	0.39449580688220653
1996	0.40514435823376527
1997	0.3967450338417765
1998	0.38959487513548535
1999	0.3577192147653439
2000	0.37005264927005177
2001	0.39238386073651993
2002	0.36936465298002324
2003	0.348568696837907
2004	0.2291238522980156
2005	0.191094837068835
2006	0.19827870701370587
2007	0.20680986543101745
2008	0.21725771993449677
2009	0.24550853332529057
2010	0.29697552880427736
2011	0.30738054698667894
2012	0.31540514968807143
2013	0.2954406182986848
2014	0.29540787938369095
2015	0.3358129153835212
2016	0.3563585641008147
2017	0.3686996309187674
2018	0.3047144714087271
2019	0.28806106967056033
2020	0.3289649326093358
2021	0.2823368510537433