Year	% of GDP
1960	33.65485952542769
1961	34.035398328860076
1962	35.252902935129036
1963	34.19574995108295
1964	31.83585662264072
1965	31.313078816247426
1966	28.03374592538749
1967	28.405538064200677
1968	29.28189425337948
1969	26.252179993088316
1970	26.029277922165072
1971	25.258781648443456
1972	25.83565188446393
1973	25.375499050101674
1974	24.093842782154777
1975	22.355182233473702
1976	20.117730094064793
1977	18.70307223596712
1978	18.200123909238286
1979	16.022568861303814
1980	16.110894551613576
1981	15.766439489489875
1982	15.92606537050145
1983	16.900845128291035
1984	18.61334037843857
1985	18.878949813177552
1986	20.81149146559213
1987	21.34757162892762
1988	22.010803617763187
1989	22.40069085872616
1990	20.52100538781155
1991	20.863076832382205
1992	18.922116996165535
1993	23.40315896331434
1994	22.145945959520592
1995	21.912168823555522
1996	20.75005810314836
1997	20.108773733326153
1998	17.475945464061557
1999	17.571351815211774
2000	12.401175424691049
2001	10.470148490588189
2002	9.434003899653721
2003	9.050128130900978
2004	7.968919515633878
2005	7.726325546194232
2006	7.7196786518902885
2007	7.648394216702633
2008	7.349375700836504
2009	8.61225542007853
2010	8.33021025899583
2011	7.908539174874214
2012	6.999441089950735
2013	6.96320880489033
2014	7.404399670031854
2015	8.020496297287968
2016	8.072125858949976
2017	7.902220409515742
2018	7.645058946512714
2019	7.786764670961362
2020	8.38574810334215
2021	7.997849790265474
2022	7.176291605106646
2023	7.677376716425164