Year	% of GDP
1960	9.45263060501442
1961	16.6534098671762
1962	18.3741359447005
1963	16.4970660705667
1964	20.3292087651803
1965	22.0391705069124
1966	19.484299208578
1967	20.7296127014674
1968	22.8470992028344
1969	27.0578221013398
1970	27.683498008158
1971	30.3051310043668
1972	36.6520742130498
1973	41.2729809872667
1974	38.3963968136347
1975	42.9433180642716
1976	50.3701249951834
1977	50.5932725381062
1978	50.5943423076379
1979	63.5745963502115
1980	62.5179443129203
1981	75.0627108104543
1982	87.0663330413208
1983	94.1975334010534
1984	76.9394470682149
1985	66.692458933128
1986	66.1731178258736
1987	54.4340912386825
1988	55.7806587541559
1989	54.5745507244063
1990	45.7534040131756
1991	37.0620167493829
1992	30.709622566451
1993	25.6504000825216
1994	23.4479992017871
1995	27.1035678439787
1996	33.0820635579943
1997	39.9411137898917
1998	45.6024008942249
1999	47.5694044647849
2000	46.2505782907807
2001	57.2534142148807
2002	56.9916742994974
2003	63.31997832914
2004	57.5690361207784
2005	56.0957358241608
2006	53.6945086034557
2007	52.7005355497543
2008	57.7068140166265
2009	60.0774622952605
2010	51.1465429253258
2011	49.6394903852819
2012	51.7766651751811
2013	51.724374185105
2014	52.514454363194
2015	49.7702558447154
2016	53.6441647791386