Year	% of GDP
1960	12.826447899644938
1961	12.72610414482241
1962	12.755887758678162
1963	14.859156231683505
1964	14.990903508373446
1965	15.00528708646905
1966	16.115655307757475
1967	16.511332776301373
1968	14.859114059842623
1969	14.690875300432237
1970	12.991569551202579
1971	11.123243477991128
1972	12.586878370281607
1973	12.291531297379251
1974	6.063728165938865
1975	10.806904515893757
1976	13.105160662122687
1977	17.420551313278857
1978	21.267888489432735
1979	17.55164415408924
1980	14.146983545281987
1981	16.521856306156728
1982	23.564456136476984
1983	30.717832431075898
1984	34.47857708785031
1985	39.064514586068164
1986	49.85988447922489
1987	52.08730225500185
1988	53.82138394464463
1989	50.25513561956506
1990	42.60046535383917
1991	43.41454351584083
1992	42.73434107137988
1993	45.547970439689536
1994	46.14199079469806
1995	44.97319399426251
1996	43.57947192064505
1997	43.83308073251021
1998	51.294639612796324
1999	49.73692325196764
2000	44.33698100835677
2001	47.95316835525897
2002	53.64810765349033
2003	51.13735609103907
2004	50.010170537874
2005	44.646070471273696
2006	46.87476824152616
2007	50.993159792587626
2008	48.10370431932889
2009	64.5707260565888
2010	55.16825215559349
2011	48.777279240791685
2012	51.825379798320384
2013	55.258880923610675
2014	60.76526750643182
2015	71.60161706479255
2016	72.37042926791472
2017	67.51297230318063