Year	% of GDP
1970	0.7035042265014211
1971	0.623326218252656
1972	0.5713543281132333
1973	0.6711036341129403
1974	0.7727429200140248
1975	0.5315510622392884
1976	0.41182653469776354
1977	0.5544423806469883
1978	0.49795992720050863
1979	0.5174248210812876
1980	0.5439032439333926
1981	0.47827174399757905
1982	0.4411200572045069
1983	0.47197565845627953
1984	0.3093206155824899
1985	0.507773822754621
1986	0.5797770727854712
1987	0.7010283939526449
1988	1.013302334902987
1989	1.2518782911749826
1990	1.410741260956454
1991	1.0967122448336701
1992	0.9249491438928057
1993	1.0686250592974613
1994	1.073158062271026
1995	1.3956155186301509
1996	1.423795555675966
1997	1.8257418463635904
1998	3.3051072337531395
1999	5.748738622762433
2000	8.541050822993856
2001	4.5130560553968415
2002	3.741589036719973
2003	2.887601321480475
2004	2.8107426332919476
2005	6.105767547813738
2006	7.100850826196277
2007	8.898304730780495
2008	5.3619806613842425
2009	3.223337650728022
2010	3.5733016000641022
2011	4.6081932370296075
2012	3.6120070217492475
2013	3.243109269476687
2014	2.4755506028598524
2015	5.465760105764209
2016	6.563823751268055
2017	4.146536724444289
2018	-1.3778686646708278
2019	2.690381237310361
2020	0.7626464443861993
2021	2.1055505040013855
2022	0.7414067727934651