Year	% of GDP
1960	67.14363170629622
1961	67.50377103939412
1962	20.818646681992252
1963	36.825515142829886
1964	29.439762528689272
1965	25.833078350086236
1966	24.653572004075276
1967	21.63176932496496
1968	24.18725435805686
1969	28.070758079996022
1970	29.152668405584464
1971	27.6637775284367
1972	25.72686830150272
1973	31.589763529862765
1974	35.48977562326984
1975	42.965599189392776
1976	37.11867295680613
1977	41.740317300589794
1978	40.1687321682685
1979	32.8657490800092
1980	30.338461694712425
1981	30.877742861459694
1982	28.998074945983333
1983	25.802311244076563
1984	27.466367506929227
1985	26.742187742707785
1986	23.171953233798124
1987	18.412109743391234
1988	22.603719399100704
1989	28.51405637081755
1990	24.937028598711272
1991	23.599764537210653
1992	23.869489956697386
1993	23.138936373697
1994	26.053712542542762
1995	28.99622922908761
1996	23.944699551594617
1997	21.337600126074157
1998	22.516096548703953
1999	22.77899621950233
2000	20.78862591469315
2001	20.408417721919076
2002	23.452441183910956
2003	22.10007177574458
2004	22.965038111349912
2005	22.469177322076632
2006	20.151157699553384
2007	22.82531772857431
2008	25.381310444720697
2009	31.698748452747456
2010	28.502986377930533
2011	26.23200355172195
2012	26.37484733255696
2013	28.35164322815463
2014	29.304055596398936
2015	32.67648090936899
2016	31.27424482073283
2017	29.487136654091163
2018	29.013061939014307
2019	26.098900658676254
2020	24.854555450919726
2021	23.388395190093327
2022	20.394350980065425
2023	21.02837305275958