Year	% of GDP
1960	9.648407750004468
1961	9.88963248241212
1962	9.732633801581427
1963	9.760150900074178
1964	9.397120840268938
1965	8.98627346850623
1966	9.289467766473766
1967	9.304821204757076
1968	9.5005796559511
1969	9.23067136543086
1970	9.32597950149034
1971	9.726735933725118
1972	10.345873170460596
1973	12.45084828155225
1974	16.18120528253548
1975	14.572243893665027
1976	15.676790423103274
1977	15.71824011772946
1978	15.67343674519233
1979	17.53926238307302
1980	17.859128205312942
1981	14.873885627128477
1982	15.263824010435842
1983	15.581571385583196
1984	15.817416029449369
1985	14.869692908243259
1986	13.54385563300416
1987	16.04552144484757
1988	17.271059955200354
1989	18.035805016386895
1990	17.810837563279975
1991	18.785232823839017
1992	19.18960005811348
1993	18.500672473833017
1994	19.283850521314417
1995	20.053134406731278
1996	19.897315492451423
1997	20.611497695933327
1998	20.14679740697735
1999	22.300228456398962
2000	24.44343753978373
2001	23.92275866435464
2002	25.65177364675573
2003	27.162531351432257
2004	29.44480832883847
2005	30.43711325322548
2006	31.314332920691346
2007	30.825680552101197
2008	30.948944456644632
2009	25.461246016550156
2010	26.619574679258996
2011	27.31068554301953
2012	26.85318450080974
2013	26.055949980131913
2014	25.057649889015153
2015	23.330295872483248
2016	22.28563828637469
2017	22.86720171014977
2018	23.67702029783682
2019	22.895946110687856
2020	21.94498645133071
2021	24.18301896078994
2022	25.880000821128153
2023	24.49460132486471