Year	% of GDP
1960	23.4799967063777
1961	23.9993597455943
1962	21.5705255602889
1963	21.6966326108477
1964	20.9914411053281
1965	21.2615930650059
1966	21.4260752596245
1967	23.3129624028497
1968	24.8856907113208
1969	28.6707148379593
1970	30.7357944554373
1971	32.5757623983511
1972	35.5547690010519
1973	36.8967079620682
1974	37.4124316390931
1975	41.2727573376906
1976	42.8928916127952
1977	43.6830438785336
1978	39.1491102670878
1979	40.4212140315956
1980	37.351929410306
1981	41.5378171622883
1982	47.6750277181312
1983	48.7212643600052
1984	44.6038320279041
1985	44.3132936346101
1988	98.2759418112088
1989	132.538473484374
1990	56.9670494363138
1991	56.0506715325709
1992	63.2411318532217
1993	76.0567428815818
1994	50.9536410442244
1995	43.1254379464421
1996	41.2440941528068
1997	45.1683704564584
1998	47.6920951207958
1999	46.467306460726
2000	44.5617440936137
2001	44.3613010552547
2002	46.9483125067999
2003	46.7515197161686
2004	44.6205261293244
2005	46.4231846115464
2006	50.0540119085522
2007	53.4396129772193
2008	52.7951202903991
2009	58.0263015568542
2010	60.3077846811221
2011	62.5885899023962
2012	64.8550514316485
2013	65.7468578560681
2014	67.8080873838737
2015	67.2440693839938
2016	70.5310136044625
2017	71.4605092860193
2018	75.0578186786617