Year	% of GDP
1960	23.703332392743185
1961	25.949838766125726
1962	24.71630184331797
1963	25.1426829578073
1964	21.207656966312666
1965	22.926267281105982
1966	29.601736022466174
1967	28.518162136155883
1968	29.639061116031883
1969	28.45774151304523
1970	27.353487728813235
1971	24.968808484092328
1972	19.04663331248697
1973	21.919879062736207
1974	14.093182660244535
1975	15.420705100011734
1976	9.36803921406465
1977	13.610669654763216
1978	18.266711664078993
1979	18.393812650419424
1980	15.93094844021705
1981	11.6791365957527
1982	10.269129202872655
1983	14.927356361503227
1984	17.0914113819824
1985	14.471105266402088
1986	19.90171941973002
1987	20.98294641158336
1988	19.46722536279072
1989	17.826236936712895
1990	22.07099007058621
1991	22.55323106744127
1992	24.278745232860416
1993	30.588261298831437
1994	23.94416944285849
1995	20.15937840690813
1996	18.32958048225958
1997	17.88842598663748
1998	14.991655561505985
1999	15.10481811736632
2000	11.53042323599999
2001	12.180940738621452
2002	11.014865424870631
2003	11.323758975960036
2004	12.237156333863853
2005	7.001096710439883
2006	7.939837008628955
2007	4.784154140771788
2008	-5.340249678177422
2009	3.1302419843107736
2010	1.9567463377692729
2011	-1.6482604203104372
2012	-1.739483124144869
2013	-0.8479180166692736
2014	0.24197371689399397
2015	5.0777350050642385
2016	8.459802098269424
2017	8.32279257529584
2018	10.46130942838356
2019	10.230649350157053