Year	% of GDP
1960	21.82550518842163
1961	19.741886020955786
1962	19.51847086932549
1963	23.586926668497664
1964	24.874236874236875
1965	20.132421099095122
1966	20.484194168404695
1967	19.113934038188418
1968	17.46356833398976
1969	16.53306613226453
1970	17.094577711144428
1971	17.7829783452321
1972	17.3751077256679
1973	18.161120840630474
1974	31.297417771674287
1975	35.546300832925034
1976	27.91814575067864
1977	31.365790082705026
1978	33.93621159082069
1979	42.971524606798575
1980	42.86839927693697
1981	43.498141105080975
1982	37.86872105450659
1983	34.21052631578947
1984	31.962025316455694
1985	27.882037533512065
1986	22.22222222222222
1987	22.718446601941746
1988	35.22727272727273
1989	32.33766233766234
1990	32.5678496868476
1991	35.37777777777778
1992	30.913012221423436
1993	30.09020618556701
1994	28.057142857142857
1995	27.696078431372552
1996	26.198779424585876
1997	24.896577660774728
1998	25.713291579679886
1999	23.309492847854358
2000	22.816818582769773
2001	22.33063841650404
2002	22.67088941673265
2003	24.38323353293413
2004	29.589944364310732
2005	32.60909935004643
2006	31.568722680913062
2007	34.828141783029
2008	38.637632607481855
2009	31.596622529265016
2010	26.58710425990386
2011	24.688206549485813
2012	24.314802651221115
2013	23.355192431735112
2014	22.676056338028168
2015	21.66209746716314
2016	19.90108511109471
2017	27.818047539593532
2018	27.926364064977925
2019	24.479985704074338
2020	19.653479829665507
2021	19.295823265447016
2022	21.896079056423336
2023	21.344309431435494