Year	% of GDP
1960	8.658347383256212
1961	8.813849297484632
1962	8.982192252934682
1963	8.487069190410727
1964	7.737570376552522
1965	7.267744066671123
1966	8.032313939942018
1967	8.94316815803667
1968	8.789814138597634
1969	8.17287481859989
1970	7.58902698083015
1971	6.5640412773440495
1972	6.1524600290799425
1973	5.55020830266899
1974	5.560717005860479
1975	5.270041314429149
1976	4.849868661751984
1977	4.845586218334919
1978	4.679072658331672
1979	4.676712052393038
1980	4.856213919103598
1981	5.302370508740307
1982	6.396092187337311
1983	5.9565743051323174
1984	5.902030209652119
1985	6.114219666043103
1986	6.281246934834213
1987	6.063363393844075
1988	5.709176413174607
1989	5.5115737274307115
1990	5.273806751260877
1991	4.613112391525734
1992	4.710748861405298
1993	4.38771188195337
1994	4.0296023755094925
1995	3.690770923105734
1996	3.399119995571738
1997	3.2523729750702683
1998	3.074372665231692
1999	2.964335879787574
2000	2.976918914534697
2001	2.993881306923136
2002	3.2959568981561733
2003	3.6303026361187216
2004	3.790559618540973
2005	3.8430819344038527
2006	3.786916663738633
2007	3.807321875334876
2008	4.14203845550688
2009	4.57242990214822
2010	4.544025657040175
2011	4.4482551771561045
2012	4.123657003954734
2013	3.7338599244056936
2014	3.439728525330777
2015	3.2988391752450545
2016	3.2528698155332245
2017	3.167831184566762
2018	3.1692171692168474
2019	3.2734206533864167
2020	3.5306351302018006
2021	3.2862007943543103
2022	3.283099733674031