Year	% of GDP
1960	7.162710814189921
1961	7.302238184448558
1962	7.901479694700461
1963	8.121624711052403
1964	8.110931779048208
1965	8.194124423963133
1966	7.9908092928261425
1967	8.804426268943951
1968	9.455270150575732
1969	10.335448776065277
1970	11.729028850933611
1971	12.40642545227698
1972	13.696060037523452
1973	16.291644863073433
1974	17.881622823267875
1975	18.347178062881788
1976	20.84631437643949
1977	20.72910742744838
1978	20.06475035948118
1979	19.277052129822184
1980	20.24260962477216
1981	20.633516742354292
1982	21.95292318341521
1983	20.1081061587241
1984	16.471657134618948
1985	14.89082806195393
1986	14.252140170325559
1987	13.84773840557477
1988	14.361748420715767
1989	12.922849273878612
1990	13.036162790399139
1991	11.601538608654703
1992	9.346569307847295
1993	10.514139196298315
1994	9.311929402504393
1995	9.999221278142143
1996	11.919856590079355
1997	13.478189233992044
1998	14.6774936793992
1999	13.563239591679107
2000	13.957771985254036
2001	14.256968762635278
2002	14.728140174899854
2003	14.215900534425446
2004	12.885663306357714
2005	14.211253848482599
2006	13.889838028599987
2007	14.887560521751697
2008	16.206022593749626
2009	16.538645304637022
2010	16.120060965612723
2011	15.804842742253983
2012	16.277054102879024
2013	15.500357517931759
2014	14.518293303794078
2015	13.81600154728902
2016	13.83994662048013
2017	13.382778591311462
2018	13.437951195979187
2019	13.5821416742441