Year	% of GDP
1960	6.828244452368947
1961	7.183119451884642
1962	7.775211057236289
1963	7.647967886081262
1964	8.187569981374631
1965	8.454828320462115
1966	8.55911396671833
1967	8.581104023805203
1968	8.825383753033817
1969	9.03292637290733
1970	9.924752170527269
1971	10.641721263882857
1972	10.181354524649883
1973	9.698635414694044
1974	9.932353894466857
1975	10.97836438628235
1976	11.202921072141809
1977	11.112687527460437
1978	12.007829296206351
1979	12.576632593478458
1980	13.054145438633274
1981	12.971809803021408
1982	13.339978618272882
1983	13.023909566333124
1984	13.997473768447428
1985	13.5236858098283
1986	14.651556979729735
1987	15.882246214866424
1988	15.178538961227284
1989	14.515750903552426
1990	14.868304622023249
1991	15.098061822995392
1992	17.137078176173645
1993	16.802830543972664
1994	17.47794332155874
1995	16.109329764628406
1996	16.52359083643568
1997	16.3959878994627
1998	16.461649703645403
1999	16.397134646781712
2000	15.372644530113591
2001	15.647263854697155
2002	15.109681583693519
2003	16.014262969492354
2004	15.945980461365561
2005	15.105117815053305
2006	14.640851548050032
2007	14.686919470043563
2008	14.926206726583555
2009	15.608343524576673
2010	15.612310483314108
2011	16.029570678488902
2012	16.19109338768535
2013	16.481392165677814
2014	15.992689096819612
2015	15.447154501070104
2016	15.38735962210088
2017	15.3929477440956
2018	14.858673028608688
2019	14.63007152115928
2020	15.175597970267487
2021	14.72431839453423
2022	14.376138787520626
2023	13.972241042795366