Year	% of GDP
1960	22.06896551724138
1961	23.863636363636363
1962	19.587628865979383
1963	17.167381974248926
1964	14.328358208955224
1965	13.661202185792352
1966	16.512820512820515
1967	18.783542039355993
1968	13.856562922868743
1969	14.946690806678737
1970	3.3962264150943398
1971	17.7391554151106
1972	17.157115814833936
1973	34.10829899941142
1974	15.853441367643134
1975	18.89773732777146
1976	20.95897876275721
1977	21.485394492533803
1978	22.710228867227254
1979	24.041500484113097
1980	17.34631903171229
1981	21.390463571716086
1982	19.796518783516717
1983	14.253542005188288
1984	12.12670050461829
1985	11.378772938463081
1986	11.181662284982071
1987	14.29512040694973
1988	14.669747548997133
1989	12.066463554333566
1990	12.200851012804181
1991	15.12534471033717
1992	15.384895596929907
1993	15.641295509116462
1994	15.871634130537405
1995	15.407711419727757
1996	15.240212274229764
1997	16.845293389075756
1998	17.337578081038522
1999	15.075330960038224
2000	14.45702090109122
2001	14.327939786834628
2002	13.072905952149124
2003	15.206308850127886
2004	17.468462801396953
2005	17.69885816398754
2006	19.460573429621828
2007	19.52605528437057
2008	23.2080945884283
2009	19.624774517740576
2010	19.407605475996835
2011	20.882311012510936
2012	22.91537972954366
2013	22.484412011964423
2014	21.202812239529713
2015	19.705390395894096
2016	17.389181654329576
2017	15.924006159613569
2018	14.8534539371168
2019	14.120800322786284
2020	16.43282974577663
2021	18.277016779202665
2022	18.917475545457492
2023	17.25508900498155