Year	% of GDP
1970	1.3963659524639531
1971	1.3675969560016623
1972	0.7192382434913582
1973	0.9140692563209042
1974	0.837720025593504
1975	0.7559944183079037
1976	0.6676689504122302
1977	0.48549922756823716
1978	0.6484899904073234
1979	0.8285332058538329
1980	0.9240632841543306
1981	1.0603222424143548
1982	0.8412239755653059
1983	0.883922591367705
1984	0.5970016394168031
1985	1.0823015270362188
1986	1.1195906022021977
1987	0.9027810390538458
1988	1.1653829670561262
1989	0.7443520548799677
1990	0.7302541127693853
1991	0.9780295164708545
1992	1.1578036832200842
1993	0.8796807853777143
1994	1.5476703795708304
1995	1.5421112398664918
1996	2.062337892645432
1997	2.6326096706566773
1998	2.9890341685332484
1999	4.258738196939049
2000	3.458595592081107
2001	3.2731319134526182
2002	2.7243662369241908
2003	2.109285445080758
2004	2.8761746687847056
2005	2.659889407770262
2006	2.285668913262506
2007	3.185808642422053
2008	3.099988161976875
2009	2.136091261635252
2010	3.269724044776811
2011	3.2441223128918852
2012	3.2315831789821265
2013	3.258409537617308
2014	2.8894265775142114
2015	3.190808109923878
2016	3.3877450986590936
2017	3.0185452321131354
2018	3.305494916629233
2019	2.8907836506926055
2020	2.3029530610396414
2021	2.624502868147037
2022	3.2492405338268995