Year	% of GDP
1970	1.2514125417730735
1971	1.006803727569723
1972	0.9787245250738347
1973	1.0758132386729105
1974	0.6020355037270727
1975	0.7568691840630942
1976	0.5603324142836574
1977	0.6302553109293444
1978	0.5409528400602082
1979	0.5532385377031528
1980	0.10047160208204181
1981	0.43147647257910593
1982	0.3437626454480476
1983	0.3457953514393966
1984	0.24337082068343469
1985	0.4608308852069415
1986	0.20649139770874284
1987	0.6124789461089335
1988	0.5623957269885234
1989	1.252082838705915
1990	0.6156272593487118
1991	0.634914519580426
1992	0.9386721900382022
1993	1.2846983363022033
1994	1.2081328043513408
1995	0.8150455333513902
1996	0.8157755681433634
1997	1.0184480013359174
1998	1.017641874261694
1999	1.5399677318865677
2000	1.3150027571219196
2001	1.4066526830875807
2002	1.7209938572277264
2003	1.7951457893731677
2004	1.8948464757430477
2005	2.255215728058131
2006	2.582342937707542
2007	3.059867417130312
2008	3.170779351036944
2009	2.65125636179538
2010	2.673868943011149
2011	2.892973736782659
2012	2.773610706085388
2013	2.633861050770874
2014	2.2052151132501785
2015	2.3552186572479705
2016	2.1249278360106687
2017	2.343564769033939
2018	1.944552313528629
2019	1.7690596240548595
2020	1.5492861623857095
2021	2.010267238870523
2022	1.6723984539796197