Year	% of GDP
1967	18.560140762797378
1968	18.776027864013216
1969	18.816445271542122
1970	20.530824857802067
1971	20.532728220833107
1972	20.996898066689635
1973	19.75989199540483
1974	23.306472869099533
1975	23.581959866487505
1976	25.844848449560743
1977	26.921204468222975
1978	26.339892341813975
1979	23.47470221672234
1980	24.49379413993338
1981	24.86173888090622
1982	23.41832866720285
1983	24.006855291187346
1984	23.093791475051532
1985	21.3309096711888
1986	21.25353852598891
1987	21.085794466841445
1988	21.987875888899115
1989	22.307910477963286
1990	22.532001143904463
1991	22.171490617587413
1992	22.879247569294165
1993	22.595734114418676
1994	22.905864113156
1995	23.158835230217683
1996	22.65405120249326
1997	23.318603446299228
1998	23.557473110940723
1999	22.968705423251244
2000	22.01707621182169
2001	22.00386041775441
2002	22.47784405943699
2003	23.133543226568175
2004	24.884299250815893
2005	25.25842928189979
2006	26.557986797689882
2007	28.19633299648361
2008	28.112143298634646
2009	27.826781567273883
2010	28.517673144626748
2011	28.598017781673345
2012	28.299785179887216
2013	27.30213217663926
2014	27.577426408053228
2015	27.393512611126518
2016	26.88905348723522
2017	27.42949077212309
2018	27.612792467761967
2019	26.63074687566784
2020	25.660226215079568
2021	26.99511968160062
2022	27.79403118604446
2023	27.880800295455266