Year	% of GDP
1960	17.65051395007342
1961	12.726008344923507
1962	14.10958904109589
1963	14.05579399141631
1964	14.701789264413522
1965	16.211699164345404
1966	17.005516154452323
1967	17.670454545454543
1968	18.6031746031746
1969	20.102739726027398
1970	20.633078880407123
1971	18.882474226804124
1972	20.329643721895536
1973	20.94945054945055
1974	19.661557079467524
1975	21.38364877443376
1976	22.186831875607385
1977	21.952191612231374
1978	17.45457993545515
1979	14.69281163380998
1980	13.588383741822124
1981	16.64666497911657
1982	18.482882522254627
1983	20.760402134361204
1984	17.846443394811136
1985	17.425880810930174
1986	19.654145612802054
1998	16.948837023257873
1999	17.718121789149784
2001	17.13938242313036
2002	15.242163400700536
2003	17.350509392557203
2004	21.95059201405513
2005	24.952589175002327
2006	30.021976347163488
2007	36.55029449299765
2008	41.234664187126484
2009	43.49656434469142
2010	43.591842665009516
2011	43.621291023097676
2012	44.97173074624497
2013	48.13325975885176
2014	51.64744342817295
2015	52.22347756529025
2016	51.60845722290303
2017	50.33911162696441
2018	48.573728156182135
2019	48.190574986161764
2020	52.73286421818985
2021	48.776086797860884