Year	% of GDP
1970	2.6472503014850535
1971	2.466427325523483
1972	2.3866227846311827
1973	2.4466284814076524
1974	2.6084924373692773
1975	2.2907956385576673
1976	2.213753191153102
1977	2.0198034949001675
1978	2.1161773553282104
1979	2.118257036108655
1980	0.8989602537478044
1981	0.9917387497611334
1982	0.777542306029829
1983	0.683647812383013
1984	0.772149104308084
1985	0.5782043821409065
1986	0.6977847858061997
1987	1.65457005625986
1988	1.762507858710587
1989	1.59508302354399
1990	1.8835748227647393
1991	2.2345029054451033
1992	2.7848748083801738
1993	2.682541010185807
1994	2.6588019766255604
1995	2.746987441130298
1996	2.8769120740429113
1997	3.081992039800995
1998	3.0794259618778677
1999	3.3436973218797372
2000	3.699950972381108
2001	4.254378785398592
2002	4.0257846450989865
2003	4.066053902477021
2004	3.7888974166061837
2005	2.4729787616180126
2006	2.071181521198967
2007	2.965805521529356
2008	2.1117324481217725
2009	2.562815516918384
2010	1.8053560939740583
2011	3.1592109459888573
2012	3.2950494522349514
2013	4.069107439387511
2014	4.005166029907114
2015	4.179212983191955
2016	3.248807881933176
2017	1.7033618901853347
2018	1.6608845383497197
2019	1.5869886830307225
2020	1.7820131968855193
2021	1.7223688323968165
2022	1.4583230783804957
2023	1.3322129875284738