Year	% of GDP
1960	6.833676656842144
1961	5.957576404810984
1962	6.031814896029468
1963	5.906834458192
1964	5.684997747458328
1965	5.211561588637059
1966	6.671686851671884
1967	5.946617672764503
1968	4.942973469782218
1969	4.030933822967417
1970	3.878944275915528
1971	4.002401341363301
1972	3.708910335695105
1973	4.723332826443825
1974	6.020569250353381
1975	6.646916056129493
1976	6.114690211013893
1977	6.264929323814853
1978	6.588186607976717
1979	8.16916637407572
1980	9.245025716344255
1981	8.571238135042371
1982	8.142627900907689
1983	7.852964462601688
1984	7.725974551242791
1985	7.645481197861629
1986	7.023050239012678
1987	6.9802331516718175
1988	7.455230361390422
1989	8.152001812726414
1990	8.452911276051978
1991	8.493485780599592
1992	9.590172116807167
1993	9.817322331605114
1994	10.190059460480063
1995	12.023480671187661
1996	11.544318599780373
1997	11.9286695486689
1998	12.68100089975455
1999	13.363533431491991
2000	13.903686599099501
2001	13.434875119525744
2002	15.24427901074666
2003	15.644522274734577
2004	19.6446890963991
2005	22.396422920035626
2006	24.45653907706868
2007	24.886568930444756
2008	29.270863179083523
2009	25.872350268527367
2010	26.85427324862164
2011	31.083468693948475
2012	31.259291067323954
2013	28.413270646160456
2014	25.954222738940093
2015	22.109724709465947
2016	20.924250802676774
2017	21.950732115223143
2018	23.689140733537986
2019	21.2411386333823
2020	19.075628399604074
2021	24.023930453492717
2022	26.764832131825777
2023	23.96228484037202