Year	% of GDP
1960	87.10616181148596
1961	86.2418545233919
1962	84.2100108580612
1963	82.56690993764208
1964	82.88640798517977
1965	82.81913327730813
1966	82.35214691259003
1967	84.30555843070373
1968	80.26094519471987
1969	78.80606606365033
1970	78.57945569728615
1971	79.93310469561604
1972	81.78362837080668
1973	80.56148468040494
1974	80.84589737774618
1975	73.7015335423574
1976	76.91149172214813
1977	79.0780911665807
1978	78.4734423736075
1979	77.73088826697904
1980	79.76295156836144
1981	77.71906340831136
1982	77.00586550212813
1983	77.2440360894337
1984	76.94062449656977
1985	75.21809417201702
1986	74.6906869296189
1987	72.99819624458533
1988	71.91868775355769
1989	70.16258129707815
1990	69.36186332128894
1991	69.2921324024303
1992	68.50743906930809
1993	68.78862000264232
1994	67.88426489819902
1995	67.15520174366148
1996	67.68278798915024
1997	67.2813372699742
1998	66.73271580748684
1999	67.15643759452722
2000	67.38833206083753
2001	67.89062986462235
2002	66.59846829954625
2003	65.28817961757409
2004	62.90366304674958
2005	62.40409248101475
2006	60.95387833171927
2007	60.39945058701138
2008	62.042858285827286
2009	60.42584462771128
2010	58.70675423632588
2011	60.20404624220135
2012	60.661596314068554
2013	61.46965297331207
2014	61.92633849027849
2015	62.82442703210782
2016	62.623297591183025
2017	62.044031060955106
2018	62.72955806408156
2019	63.84588366671239
2020	63.91247125335312
2021	63.95896052351034
2022	64.40938293577135
2023	63.37075246156849