Year	% of GDP
1960	22.8431941207981
1961	23.2415059574095
1962	24.1671058420464
1963	23.7487699847516
1964	21.9852131303815
1965	23.3638743305147
1966	23.2823800294926
1967	21.6163270519044
1968	22.0951913480315
1969	22.0330848897985
1970	22.850334730929
1971	25.6984989041904
1972	26.8823100294548
1973	26.5540386675089
1974	25.873887853478
1975	28.0815693185734
1976	30.7269518010795
1977	31.1535516143023
1978	33.6860045249841
1979	36.4991731246357
1980	37.6754287440117
1981	39.0952846602345
1982	42.437628412737
1983	42.3270279664694
1984	45.6062510455828
1985	47.4960909553384
1986	50.3502596000008
1987	50.9540452496624
1988	50.6652980656403
1989	52.2666334979881
1990	50.8492683847743
1991	50.5446151236514
1992	49.4828110340368
1993	48.7284460518614
1994	46.7923185453125
1995	43.609475613647
1996	45.1243671723556
1997	45.586291373565
1998	45.991096286
1999	48.3384422293862
2000	52.0846490539603
2001	53.7959779790736
2002	57.9569180752417
2003	56.6591549270396
2004	58.593587806141
2005	59.3458388047493
2006	61.4483090372333
2007	61.9078259360721
2008	69.0964575487689
2009	71.3772946584318
2010	73.4148259468647
2011	76.1459100051044
2012	77.1794747105878
2013	77.9168477225884
2014	75.9081700334318
2015	75.6110618990861
2016	74.5030176380727
2017	72.0767298362434