Year	% of GDP
1970	86.40810949854583
1971	80.60797826459714
1972	76.12753131907378
1973	86.26369088365924
1974	85.63623962708174
1975	88.83691917137787
1976	86.71655665814197
1977	83.03689300324821
1978	84.98291132049502
1979	83.01562348525371
1980	83.31577763736432
1981	86.17263284744364
1982	83.71359497001421
1983	82.38951258104053
1984	81.76684696886906
1985	82.36421434329968
1986	81.3850712846018
1987	84.81029521153751
1988	82.72999269006873
1989	81.68099229652499
1990	81.09236234577038
1991	78.92440911430849
1992	77.19327800854391
1993	78.58983434235333
1994	78.87917405426825
1995	78.92728258789833
1996	78.0150492700933
1997	76.87379014251682
1998	76.48635011069348
1999	76.09304143232636
2000	74.6152716644182
2001	76.96596319359259
2002	78.78421440621801
2003	77.96786675925522
2004	77.215828787816
2005	76.65646451374954
2006	76.3673518019539
2007	76.6982793903966
2008	77.57056404921158
2009	76.874590104633
2010	77.00693023668525
2011	77.05336599447465
2012	76.55970478737464
2013	76.01309081471955
2014	75.69286373514024
2015	74.81566144782201
2016	74.99105409220999
2017	74.89288499775758
2018	74.89775911700573
2019	73.92327378224459
2020	71.4980998116746
2021	71.32179742210697
2022	70.09993232905738
2023	70.58236479979017