Year	% of GDP
1960	23.5927026725404
1961	24.0369935780718
1962	25.0519039154036
1963	24.9259657643268
1964	23.7955193530311
1965	25.0619529590942
1966	26.0657862960037
1967	24.5247860580038
1968	25.109944529017
1969	25.0978618430075
1970	25.768538276391
1971	28.6268836773118
1972	29.7248594435023
1973	27.5747922730291
1974	25.1153670205784
1975	25.546787260759
1976	29.7045540477244
1977	30.9443113810289
1978	32.9231619597251
1979	35.63417943362
1980	36.8409506407848
1981	37.9011374229841
1982	41.4240013337184
1983	41.5687185404674
1984	44.0180286166053
1985	45.6503650681459
1986	48.3483170487562
1987	49.0366059654399
1988	48.4447068937375
1989	49.4162696328531
1990	48.062059532989
1991	47.1256336213575
1992	47.3271863216887
1993	46.4462105993058
1994	44.7867010536202
1995	43.0129121966398
1996	44.1568191948028
1997	44.2464309546263
1998	44.4901604969541
1999	46.3224360441954
2000	48.5683937154015
2001	50.5316730062078
2002	53.9089401024552
2003	52.9890451800238
2004	55.3625003370325
2005	56.6457537237136
2006	57.6443716465213
2007	58.7218182722656
2008	64.8437254797729
2009	66.427754312498
2010	68.5284548106176
2011	70.7794666281434
2012	71.6643936944207
2013	72.3836259161708
2014	70.9794764144214
2015	70.955051330976
2016	70.8423361810194
2017	69.3260800179996