Year	% of GDP
1970	0.3461836391497817
1971	0.2756385563844471
1972	0.2560140398897289
1973	0.36043574738455847
1974	0.6239772309303111
1975	0.30907515924030293
1976	0.3597024111804239
1977	0.40971677963641984
1978	0.30487788849501346
1979	0.6354233229826814
1980	1.2748286994056537
1981	0.7707987366986757
1982	0.6250740276097926
1983	0.6735305465853075
1984	0.31901931261101035
1985	0.4226149029006132
1986	0.33280658444624006
1987	0.4693913092406243
1988	1.0620388238408331
1989	0.8345749385143356
1990	0.5192038247391447
1991	0.4901860176500274
1992	0.4803124879164022
1993	0.3121302541650699
1994	0.32280753166661424
1995	0.2877083952241462
1996	0.25776715996930455
1997	0.21021154445219425
1998	0.27132493974388955
1999	0.24124651495249647
2000	0.20376007066590002
2001	0.18616590577002587
2002	0.2103454846305186
2003	0.1964196335856599
2004	0.31870233367840545
2005	0.6478957159643108
2006	1.006637792153696
2007	1.5943579095378477
2008	1.5943914010697815
2009	0.8105045300612695
2010	1.5753916495408067
2011	1.8034526750767819
2012	0.9015658985164783
2013	0.7766799683884863
2014	0.4832304539274667
2015	0.2823092511393206
2016	0.3329582935402815
2017	0.39947079932533036
2018	0.35555686765838956
2019	0.3650307069476831
2020	0.3586299479433403
2021	1.142947764701259