Year	% of GDP
1962	6.880333480970806
1963	6.587708618223625
1964	4.628570872029282
1965	3.6569492038612594
1966	4.726896308615967
1967	5.368139545522828
1968	5.715646342347519
1969	6.177084873646817
1970	7.286022567556502
1971	6.759912569091969
1972	8.030128533409515
1973	9.206183698117144
1974	11.317098020675903
1975	13.123308438962326
1976	14.225248802182918
1977	14.381704752931492
1978	14.376855734329858
1979	14.799320384185952
1980	15.36272302124784
1981	17.9055249330962
1982	16.913282913852594
1983	15.985912084012124
1984	16.65110841929092
1985	17.91518664545343
1986	16.979562049739506
1987	17.878414292332852
1988	17.01711943381267
1989	17.100511102207005
1990	19.116189126292003
1991	14.348755526960941
2005	19.72398839832615
2006	16.899530815137716
2007	18.824020068182463
2008	19.402868247944426
2009	22.47746294569754
2010	19.883064420177433
2011	19.748548037157235
2012	21.943175026462423
2013	24.684368330773683
2014	27.252861688618076
2015	27.086779567725642
2016	25.65966937246205
2017	27.728944128718208
2018	28.075002658053478
2019	28.414322543091945