Year	% of GDP
1970	16.388015229266678
1971	16.833128457283344
1972	20.13755980861244
1973	20.417853751187085
1974	14.581449578832151
1975	23.022569516605014
1976	19.185248870433718
1977	19.157337297347517
1978	24.694821946224835
1979	20.83139341536415
1980	16.637606795003062
1981	16.051048093209598
1982	15.624008632333963
1983	13.238228711775896
1984	19.6716054538642
1985	19.46430574451879
1986	13.558924280311825
1987	13.508042681177162
1988	13.98077853430818
1989	11.587557437630453
1990	12.531936706319167
1991	15.577769254244442
1992	16.70433586690219
1993	16.563775236432388
1994	14.371195053134004
1995	15.244003062267
1996	16.237221274650455
1997	19.631969040453715
1998	23.606511711570107
1999	18.771852078251033
2000	18.143478693462775
2001	14.26843446605881
2002	16.29467339190203
2003	13.232072306997336
2004	11.021703148900897
2005	14.253621633663668
2006	13.865331105127929
2007	15.186654854955922
2008	17.55274006111411
2009	16.971260971496015
2010	17.007018458846893
2011	19.81555242900264
2012	17.672991991484125
2013	19.017726885894465
2014	21.033797031271504
2015	20.28127687882649
2016	21.05736185338585
2017	22.22028631847103
2018	20.596352559712283
2019	19.875010889092472
2020	15.77812951486621
2021	16.790744066766205
2022	16.61686596718007