Year	% of GDP
1961	22.7667617256014
1962	22.3656528579394
1963	22.0907724211677
1964	21.7477635415777
1965	24.995985639981
1966	25.0196622343587
1967	26.0409290931169
1968	26.982643163817
1969	28.6377265157967
1970	30.2660866089811
1971	32.3528641818971
1972	34.5541549452318
1973	35.5789812717589
1974	33.2902222869564
1975	37.7202191791207
1976	39.0163857970617
1977	40.0726956926142
1978	39.9039809444755
1979	41.9160784172478
1980	42.0730680873875
1981	45.3167717541715
1982	50.4120044191878
1983	51.0766784280829
1984	51.4850573667337
1985	53.3663134103373
1986	60.7300863066377
1987	60.1358883650879
1988	75.0796613452099
1989	88.0770392552027
1990	59.6240497138881
1991	59.6098875986991
1992	63.5861435368814
1993	69.2798997448562
1994	58.7491719236227
1995	56.0124867022473
1996	58.0137386106686
1997	62.0140034096036
1998	64.3075048643536
1999	67.1962994949145
2000	66.6168493125458
2001	69.6933065791918
2002	77.4780113703306
2003	79.3998084650247
2004	74.519700479964
2005	72.1378318256178
2006	73.4029453493831
2007	74.2728893389427
2008	74.5075259961534
2009	87.8436201625875
2010	88.5452709863728
2011	90.6018990983632
2012	96.5204188731926
2013	102.025516276667
2014	106.050867133998
2015	124.051083257465
2016	135.603493905624
2017	135.702538454225
2018	148.358242236946