Year	% of GDP
1960	38.8858547241944
1961	40.4804497827754
1962	45.3593089505606
1963	48.9865421587476
1964	49.3849359815746
1965	47.9137935876676
1966	48.0540320152713
1967	49.8768459005728
1968	52.4725596257905
1969	51.7303535499878
1970	46.9187966391351
1971	49.1858829224928
1972	49.4097461097017
1973	48.7017311563753
1974	55.7088591115005
1975	70.1946739190127
1976	63.8155692632757
1977	61.1982890100752
1978	80.8724646643405
1979	78.4545685779795
1980	88.0165188323242
1981	105.331786186488
1982	94.4862484608287
1983	94.9014190965165
1984	96.508457616806
1985	96.9190996730126
1986	96.4774537825787
1987	97.1591368188367
1988	97.6733990061456
1989	98.2838593710901
1990	100.110507804596
1991	92.0923830846276
1992	77.7047814108088
1993	74.5565693490264
1994	75.18955928636
1995	75.2823265536088
1996	76.1370595794922
1997	76.1472872784528
1998	83.7399667411792
1999	88.3351179635429
2000	89.0123019028827
2001	94.630694173404
2002	101.55903932436
2003	104.588119760479
2004	104.737011640841
2005	98.021338126091
2006	92.9668359513518
2007	84.1463983837943
2008	77.6984785968587
2009	75.1145461068893
2010	69.4220342404393
2011	74.610260015818
2012	73.0565004563468
2013	81.2369211197243
2014	87.0557640588155
2015	95.2669883638934
2016	119.600128703763
2017	99.0479218380346
2018	91.8101657510936