Year	% of GDP
1960	20.1521312791325
1961	21.6492218275601
1962	22.1029070935972
1963	22.7701762801226
1964	22.3781787230627
1965	24.4773715289886
1966	25.489951687323
1967	25.6716161642264
1968	26.4896071344207
1969	25.3144683226269
1970	24.6904685445277
1971	27.3526919986886
1972	27.8969861426894
1973	26.1239297074955
1974	22.6308981881079
1975	26.4223684445921
1976	28.7168351777799
1977	29.9632160061061
1978	32.9506889094636
1979	33.2991722213618
1980	32.9954968060269
1981	30.0615696435749
1982	34.3861194060067
1983	38.3572292573026
1984	38.556385936328
1985	39.7291992428633
1986	42.3507494005135
1987	42.9013124033757
1988	42.7429918859963
1989	44.6144031172984
1990	45.2847791879862
1991	44.1031101316956
1992	47.4034311701517
1993	44.3197110400262
1994	44.5964289645685
1995	43.535258391972
1996	44.8197352261327
1997	47.4332314078161
1998	46.5157019543155
1999	48.6772985672942
2000	49.6286027577624
2001	49.868401169209
2002	51.1108160646103
2003	49.6756406800666
2004	49.4366902723541
2005	48.2550675891941
2006	47.2238758367528
2007	49.9021681057811
2008	52.6531467699344
2009	56.1524192684166
2010	55.5730037492286
2011	56.7162321721984
2012	57.138686506063
2013	58.898895070468
2014	59.5705342654692
2015	61.6537611588131
2016	65.0023772626816
2017	62.5080611254679