Year	% of GDP
1960	88.7457044673539
1961	85.5653568564555
1962	86.9266055045871
1963	87.2340425531915
1964	84.5434938892883
1965	84.0146430750457
1966	81.989247311828
1967	80.2968270214944
1968	81.8404307391092
1969	81.2189616252822
1970	72.8211482858323
1971	78.030303030303
1972	76.3748079877112
1973	74.1758241758242
1974	69.3824485373781
1975	68.9446856711346
1976	68.0718954248366
1977	66.4010989010989
1978	62.7201198950918
1979	68.4210526315789
1980	69.9432892249527
1981	70.3005143940078
1982	67.4213230571612
1983	68.3576943881485
1984	69.4799150450928
1985	69.4277340737313
1986	69.9759408053021
1987	65.9829283226819
1988	72.0914440923495
1989	74.8461823719562
1990	71.5391078800278
1991	73.7913395423276
1992	85.2303766884176
1993	87.8903630336848
1994	71.459701076841
1995	79.3774463935328
1996	82.7428758341648
1997	83.1098282861319
1998	77.1861960180416
1999	87.1754162150727
2000	81.5887894555419
2001	80.4305941971725
2002	87.3687754738349
2003	88.1812825804933
2004	90.5754695187907
2005	93.3231178411174
2006	87.6841406223168
2007	75.7581900800085
2008	80.1951277812773
2009	71.2165732990245
2010	75.0188139312748
2011	81.4046183027904
2012	88.9828793172151
2013	77.5617401550333
2014	81.0284163499396
2015	81.4918832892496
2016	88.1651676771043
2017	80.1137250921712