Year	% of GDP
1970	3.0464428166881468
1971	2.9591751879528827
1972	3.367227634059745
1973	4.751518985374676
1974	10.939289015607748
1975	12.637991795805222
1976	14.268344814339185
1977	13.612778772433963
1978	13.981936082659836
1979	18.363897106465778
1980	20.881516923970153
1981	17.20180143194959
1982	14.06985066748166
1983	13.135372709109829
1984	12.096438723000038
1985	10.958912010784495
1986	6.928835882982549
1987	7.901027271867128
1988	6.562084494523296
1989	7.7693641437143635
1990	9.241980304024464
1991	5.643986478465361
1992	6.0162569681096
1993	5.512969356473404
1994	4.3644536744747136
1995	4.332548924733875
1996	4.477951182465197
1997	3.8974072387355347
1998	2.3936871193453153
1999	3.6107806785650545
2000	6.027512948960874
2001	5.4377012525359945
2002	4.946444699690842
2003	5.337533452683379
2004	7.024675483611333
2005	8.074613648125505
2006	8.835657864665315
2007	8.610833991615133
2008	11.021724501205565
2009	6.010497350873838
2010	7.729407525327879
2011	9.571291645379794
2012	7.344739670952893
2013	6.243162035095231
2014	5.3093954151466916
2015	2.9739657768734493
2016	2.5501165806177952
2017	3.1498458183303977
2018	3.9075404326648986
2019	3.2992628827451673
2020	2.203719434604731
2021	4.285919794902838