Year	% of GDP
1967	42.52577319587629
1968	67.97966963151208
1969	72
1970	67.79026217228464
1971	62.11031175059952
1972	45.45454545454545
1973	38.84297520661157
1974	56.58751099384345
1975	52.485480873443926
1976	52.2220852651815
1977	45.63794406020869
1978	38.38352473496833
1979	46.35905389685925
1980	47.29200425923237
1981	49.59518009032903
1982	41.99049812253782
1983	42.067226616563616
1984	42.67944468147954
1985	40.284728733028416
1986	30.335638905685425
1987	38.626228228881544
1988	33.76647542254614
1989	37.273834498834496
1990	31.979345189076096
1991	23.344340487983857
1992	25.522671734998642
1993	22.531018402864518
1994	23.95667666539166
1995	23.459139643119595
1996	27.739475341742846
1997	29.09105837917727
1998	26.237452255175608
1999	32.31773276106167
2000	43.153626525716454
2001	39.57830004868641
2002	40.18845097303323
2003	40.16000989064794
2004	40.409196618450785
2005	48.64379173208713
2006	51.65971412506739
2007	50.56564065405612
2008	57.77684625894709
2009	44.19629781489771
2010	54.2720456182473
2011	53.854311392116195
2012	53.58166189111747
2013	51.873893882083486
2014	49.22312500701404
2015	39.29811692323959
2016	35.861806348876655
2017	36.32106119770725
2018	43.63801728058208
2019	39.373113522389644
2020	29.856913741744428
2021	33.54567018240292