Year	% of GDP
1970	0.5866365198024139
1971	0.49530328710536514
1972	0.5259220566733599
1973	0.6773265524947223
1974	0.5123401568517852
1975	0.6166921493707159
1976	0.5626937795040866
1977	0.5085817637126708
1978	0.5617693784923632
1979	0.7888793273153161
1980	0.6213601626278732
1981	0.5710303348774407
1982	0.40832652797139735
1983	0.4534849748869564
1984	0.5416728593017559
1985	0.4883182413613382
1986	0.7612526482918052
1987	1.0214509634853364
1988	1.1315821801379204
1989	1.358081002199673
1990	1.428528230835273
1991	1.059079226913922
1992	0.9664644274895609
1993	0.9904361250273518
1994	1.1733592192646936
1995	1.3818535277969135
1996	1.4906237926774517
1997	1.818055039568037
1998	2.9187465144961027
1999	4.30906876420564
2000	4.675574909315673
2001	2.7330962710643814
2002	2.09741916313735
2003	2.0505005020518188
2004	2.985909865215167
2005	3.3509306824161547
2006	4.712310139406751
2007	6.480220303119856
2008	4.74790210937122
2009	2.3232758685703447
2010	2.8932542080954184
2011	3.5122389525546853
2012	2.535255389141759
2013	2.9508400705757216
2014	2.2002140677212587
2015	3.3442710317755475
2016	3.323481542930469
2017	3.0860989215635803
2018	0.5109568682955289
2019	1.9064107184756123
2020	1.2280927709407246
2021	3.036177477419355
2022	2.495638576728483