Year	% of GDP
1960	87.7884734668407
1961	88.6652176956245
1962	89.2011338254893
1963	89.098030054666
1964	87.0741961847816
1965	88.1763437244437
1966	87.6291865842292
1967	87.5536183761206
1968	89.5841007877957
1969	91.07487346495
1970	90.3019749636071
1971	86.1083587676922
1972	82.7760148420645
1973	80.5384098266591
1974	69.3863987563832
1975	74.7066661939693
1976	80.2821057131544
1977	84.4256789094909
1978	89.7447823593199
1979	91.791320202634
1980	95.3302962257242
1981	96.9110498114069
1982	112.194693087751
1983	117.032037312945
1984	118.628789797182
1985	122.941557058273
1986	124.110869814606
1987	130.673959578262
1988	136.915086435299
1989	143.935051413044
1990	144.307094728382
1991	143.157624637722
1992	143.263835068169
1993	142.770499850879
1994	144.196861635364
1995	146.609887174467
1996	144.675447537227
1997	146.238151667007
1998	144.486180365782
1999	151.182508172407
2000	141.863669273403
2001	136.660989970166
2002	137.508267166597
2003	140.886754633401
2004	142.70395699742
2005	146.375355690516
2006	150.182846860281
2007	153.604189984029
2008	145.86615450136
2009	155.190042773411
2010	153.937533375796
2011	156.320795969339
2012	162.230233160277
2013	164.061039153883
2014	165.124027269283
2015	166.776966059943
2016	170.385550398773