Year	% of GDP
1960	10.504103165228933
1961	10.102275099098744
1962	9.201911166182715
1963	7.937608318907058
1964	8.56054836257395
1965	8.847345253071023
1966	9.265601217765823
1967	8.606845621838941
1968	7.6763660970337435
1969	6.859958309620644
1970	6.781348750718771
1971	8.102127123149844
1972	8.303090523825091
1973	6.664265883534997
1974	5.688918351407826
1975	6.5829430353337965
1976	8.438811380744085
1977	9.830571210657242
1978	7.600799632663397
1979	7.268811729094262
1980	7.224721702307367
1981	6.4646074586425755
1982	6.288025540211241
1983	5.887562366575086
1984	7.146472304479302
1985	7.46874496152779
1986	8.569613615440929
1987	8.793614702611752
1988	8.48175503426594
1989	8.304970172273475
1990	8.23652231377537
1991	9.25621514810898
1992	9.205793076377164
1993	8.033661573961686
1994	7.502211361962953
1995	7.0030341565102034
1996	5.019558780706366
1997	5.006550218321175
1998	5.3942318667622695
1999	5.294043319776044
2000	5.0829624304871
2001	4.062420264161446
2002	4.065033247541236
2003	4.094775330938245
2004	3.758265825422022
2005	3.922211937906487
2006	3.7120451436434894
2007	3.55057108879902
2008	3.4244322613188403
2009	3.6971269559002464
2010	3.4782846318695966
2011	3.626183235958178
2012	3.2749335396981527
2013	3.4733753279625033
2014	3.9466206298852495
2015	3.70940427541167
2016	4.199089371207365
2017	4.280971613677263
2018	3.9274359246112347
2019	3.9878121713789962
2020	4.045426844099469
2021	3.5037590864709247
2022	3.462156057877238
2023	3.5202728754446957