Year	% of GDP
1960	21.805392731475337
1961	22.1665623050072
1962	23.624137320196713
1963	23.662622761905812
1964	24.26504188845444
1965	23.77588174549263
1966	22.7739726026255
1967	23.593365373399724
1968	25.435628488925826
1969	25.056486056938216
1970	25.471209242363564
1971	24.434749052988938
1972	23.375737234921885
1973	27.087373391745658
1974	29.55125860921613
1975	20.27668192821205
1976	23.262795497117416
1977	21.744385723305694
1978	22.39440996838209
1979	21.24062453573733
1980	21.431779069304298
1981	22.040644467911406
1982	19.410297553217198
1983	20.869218677105604
1984	22.958152647285395
1985	21.946154592527154
1986	17.867729056734767
1987	17.508230269642283
1988	18.058615257163904
1989	18.03498605939591
1990	18.512024871304746
1991	19.076383364723842
1992	18.98709144940337
1993	19.27130456267904
1994	19.238697865780946
1995	19.34987952248344
1996	15.227091407806839
1997	14.880537904494034
1998	14.417555794261963
1999	14.683105622719856
2000	15.192526729247371
2001	15.936779032098752
2002	15.783675320216442
2003	15.193758037230868
2004	14.221639790734864
2005	12.819199970961522
2006	11.683677107501763
2007	10.642166394259151
2008	9.974006397487637
2009	10.261159884586675
2010	9.887173990147877
2011	9.909053785714264
2012	9.827732869750948
2013	9.985032503870169
2014	9.920465161900118
2015	10.398864787891505
2016	9.705924875566826
2017	9.160845019481688
2018	9.604213819107928
2019	8.969095484346685
2020	8.996281719417551
2021	8.525427719968679
2022	9.473022087588372
2023	9.20611817476078