Year	% of GDP
1960	18.9999112336638
1961	19.4063296396429
1962	19.8086681817986
1963	20.8183306327829
1964	23.1028753084272
1965	28.4180124549042
1966	29.1815933754369
1967	31.279042718859
1968	29.8173237295816
1969	32.813290921582
1970	33.5496824683212
1971	30.9678937665493
1972	29.3251684214554
1973	27.7725573444676
1974	12.9688101251499
1975	11.6864677852223
1976	11.6411568464196
1977	16.1245758692508
1978	20.4410998366695
1979	27.5085226856727
1980	26.0895014850376
1981	21.585225191765
1982	28.7608283778302
1983	34.571237413841
1986	58.8681168562342
1987	61.5154291528936
1988	64.0129095423746
1989	61.5843445694573
1990	55.4690184493717
1991	52.1264633821392
1992	50.812319315906
1993	51.5908927368352
1994	52.4392648070474
1995	51.5731135367708
1996	48.850320981889
1997	50.6123288482802
1998	57.7969124296154
1999	57.469533229672
2000	52.5622852924639
2001	57.2667663310021
2002	56.944593538867
2003	55.3929910195742
2004	49.6064134734248
2005	44.622736647631
2006	42.6711285172218
2007	43.8402037125534
2008	39.1573831376177
2009	49.426094049631
2010	47.4417713713278
2011	45.7334586135935
2012	43.2931167630289
2013	44.7768819986527
2014	51.5334483380992
2015	68.8384072064772
2016	79.8695610809116
2017	77.070667910962
2018	81.3433963790423