Year	% of GDP
1963	9.455032735448036
1964	11.799855620396606
1965	9.793721575232334
1966	10.946277811599657
1967	9.812564485276514
1968	7.751429248738267
1969	6.74189411575668
1970	8.519879039831451
1971	8.003803238050269
1972	8.811747361839464
1973	9.527363824361947
1974	10.385316100539631
1975	10.711654418086908
1976	9.922436732777035
1977	11.42322918475488
1978	14.49903091431202
1979	7.512322191690535
1980	7.901032231249126
1981	8.806882884146194
1982	10.783084278104948
1983	72.37223461980102
1984	6.617716161719526
1985	6.8972265816126646
1986	8.066312395335617
1987	8.78443394064611
1988	10.564675032631646
1989	8.519208505830633
1990	12.889684644325747
1991	14.36422533333332
1992	15.802469585687401
1993	30.683506686478456
1994	8.401060108802156
1995	6.740504684656595
2000	3.423081396698608
2001	2.8574081289554107
2002	2.9172580390146274
2003	3.1607449476306644
2004	5.062810532866037
2005	4.530350610272528
2006	5.941400067390502
2007	7.000762027235828
2008	8.482530700235248
2009	9.711507022225117
2010	10.116303567705167
2011	10.106520769182637
2012	10.749961140579249
2013	11.449222483785874
2014	11.874049622076075
2015	12.290349366064538
2016	14.006684867678182
2017	12.672801096430836
2018	12.414752713193296