Year	% of GDP
1970	38.89371780501405
1971	37.51195289720427
1972	37.37195215802514
1973	39.860367923371264
1974	38.10043271742754
1975	35.546931628803314
1976	34.15827411799351
1977	33.03500324860649
1978	33.303003001109126
1979	34.6933585974551
1980	34.57920093222361
1981	33.51215279231829
1982	32.376885310086514
1983	31.27124234000267
1984	30.85950355311021
1985	30.590199100868904
1986	30.635158635016445
1987	31.81248040978051
1988	33.427974203560005
1989	34.19823256310518
1990	34.95619181734209
1991	34.646388244326786
1992	33.325531595846726
1993	31.68463767334565
1994	30.621309447872164
1995	30.605860469485545
1996	31.575666015201598
1997	30.58371940963901
1998	29.282583662101626
1999	28.902063912372206
2000	28.4871419080841
2001	27.730973101109573
2002	26.260418201921258
2003	25.71335381547673
2004	25.323927481045082
2005	25.901044025752483
2006	26.044686344643253
2007	25.405126856705873
2008	25.29281551911831
2009	23.624293447426993
2010	22.619659423188228
2011	23.351162300288532
2012	23.77364929735709
2013	24.55652696301125
2014	25.08454909398606
2015	24.971456174657174
2016	24.76068429137383
2017	25.007349843510713
2018	25.26776758928416
2019	25.54757857349239
2020	25.493925434997095
2021	25.457886528329187
2022	25.962386599777275