Year	% of GDP
1960	8.08099217904047
1961	7.65145336127372
1962	9.34154496013161
1963	8.81816416682252
1964	9.12767365207584
1965	9.89974910547045
1966	10.8369202790214
1967	12.13200215303
1968	11.6710420790036
1969	11.7871375005157
1970	10.0270273989045
1971	12.0355326174798
1972	15.1498592263342
1973	15.2973095898952
1974	17.9406926493911
1975	20.5549136113693
1976	21.3263599765555
1977	24.2662380710463
1978	24.6216164351423
1979	23.5522740497833
1980	26.8417026487704
1981	24.7357620014977
1982	26.6582859522716
1983	27.4562057507741
1984	23.5667812379028
1985	22.2368835484307
1986	24.5497528143125
1987	20.5384033389821
1988	26.5119003922563
1989	30.0336738819504
1990	30.8641732099355
1991	37.5465535286479
1992	26.0354461801414
1993	19.5788252414895
1994	17.3292121739071
1995	15.8216582648398
1996	14.458849761233
1997	13.7510992374896
1998	13.7898583258426
1999	14.5615361137732
2000	13.2603346630997
2001	14.1627400177282
2002	13.9531616138746
2003	14.3801761087538
2004	13.2708841613902
2005	12.7334459455176
2006	8.64280855264036
2007	6.36947030808768
2008	5.91442564288154
2009	7.05071456083966
2010	9.28594288482188
2011	12.0688017363692
2012	13.0563813397275
2013	14.1520141065046
2014	14.9133339638689
2015	13.9433893150277
2016	18.3797196957659
2017	16.5608071835396
2018	19.2671483080236