Year	% of GDP
1960	12.609689731886753
1961	14.682709084799658
1962	16.126916948858728
1963	13.753608630091223
1964	11.845251167313213
1965	8.878711524566043
1966	13.065474912110572
1967	13.0192729014594
1968	13.338013016911718
1969	14.672963155394706
1970	13.79262514499579
1971	14.025497296854306
1972	15.6491151196475
1973	17.91998034007735
1974	11.761010856488955
1975	13.15532600094812
1976	17.660430652556634
1977	18.80390416517419
1978	15.611098857900089
1979	15.0434892892144
1980	16.233593774091002
1981	24.118825168347335
1982	27.605119622702645
1983	23.436132205329663
1984	23.10992700488127
1985	24.13624104308917
1986	26.055512364582107
1987	22.98731888769473
1988	22.679408982829667
1989	22.705346449384813
1990	20.418213403936402
1991	13.774405578065402
1992	14.900789101723893
1993	13.75091178844702
1994	14.542765249456394
1995	16.025894081739338
1996	13.717301992240577
1997	15.659356605280964
1998	18.5494403117318
1999	18.656915808282328
2000	20.022411136306147
2001	20.279875407184313
2002	17.92144545358395
2003	16.980769340175726
2004	18.08880034174529
2005	16.67052655903448
2006	17.89915711795528
2007	17.99444744011747
2008	15.822148683828974
2009	17.95820592674829
2010	17.980651531711864
2011	16.353974846599286
2012	16.108290882363445
2013	16.70734829603841
2014	16.757741806073774
2015	18.091480232345887
2016	19.230655402868262
2017	18.518286796329274
2018	18.9015401014027
2019	18.95419829943862
2020	19.836163734132235
2021	20.152856636501106
2022	19.74442758752914
2023	19.690691379887916