Year	% of GDP
1970	0.44218559737883345
1971	0.4231107876004562
1972	0.4159978105220159
1973	0.4310445496034481
1974	0.4633704282100577
1975	0.4309583884489701
1976	0.3149251027639728
1977	0.39420495473279954
1978	0.40360217346489563
1979	0.4423885004226615
1980	0.525956284384498
1981	0.6452531272895339
1982	0.6197012520671826
1983	0.4755191262372156
1984	0.5203916314649999
1985	0.32730885273404586
1986	0.5901450047231237
1987	0.900821208442178
1988	0.9212544304046443
1989	1.0705836430519464
1990	1.1579934590507575
1991	0.7288578922905752
1992	0.6615866676318808
1993	0.7790584641957286
1994	0.8329846061107771
1995	1.0422469938379546
1996	1.150379903813658
1997	1.4676852395193418
1998	2.4512970574982393
1999	3.801191890856894
2000	5.050107207930784
2001	2.6480446027329934
2002	2.0709216638436163
2003	1.7744091394901282
2004	2.1654155931788996
2005	3.319903146061015
2006	4.512063595779637
2007	5.806662713205424
2008	3.863423166427813
2009	2.1996003829425157
2010	2.718656306595712
2011	3.187203412988949
2012	2.6486885516121244
2013	2.663561510053154
2014	2.392295044554828
2015	4.212392826270568
2016	4.295042396020994
2017	3.0856965729753365
2018	0.470368907891929
2019	2.2478333155393013
2020	1.1996109172362937
2021	2.440978736262802
2022	1.8296547277972652