Year	% of GDP
1960	58.1938876684522
1961	58.7707253550224
1962	62.0184081559579
1963	64.3796700261492
1964	65.4167126918168
1965	66.7398140956436
1966	65.6913331374713
1967	68.4051790781158
1968	68.919752806524
1969	67.4308950817164
1970	71.8341898104564
1971	74.5879471560731
1972	80.231089079423
1973	82.936854342828
1974	82.3412393451588
1976	83.1966763079247
1977	85.3889685225654
1981	90.7779216407816
1982	92.0209975898166
1983	95.341717392987
1984	97.7554903522797
1985	100.011990573403
1986	111.195998775446
1987	119.295383486139
1988	123.72449034525
1989	123.256666156783
1990	121.066130370421
1991	121.207421438375
1992	122.327593555019
1993	127.074610707404
1994	129.436872758947
1995	131.755089348054
1996	126.987083493053
1997	114.769740997939
1998	117.329245482475
1999	121.251967612889
2000	123.294314152032
2001	123.74490634294
2002	122.973773394625
2003	124.692321822527
2004	124.940790437517
2005	126.644498325015
2006	129.377863831643
2007	134.180006309709
2008	142.743578549987
2009	147.867500993342
2010	150.35550849965
2011	152.892310782979
2012	152.364500241048
2013	147.922440162151
2014	148.701128307462
2015	144.662954638362
2016	149.144519798294
2017	147.331513810766
2018	144.739304514924