Year	% of GDP
1967	11.859987509952509
1968	11.673856672992937
1969	11.297219187470917
1970	11.896431768547645
1971	12.644835127014456
1972	13.998942127593411
1973	18.433927024566586
1974	23.453312376796514
1975	21.843809482769785
1976	22.21147017153604
1977	21.987781818260817
1978	19.57506965392338
1979	22.440158729242743
1980	24.090789963971122
1981	23.02783683848734
1982	21.171894113166267
1983	19.331200487809443
1984	18.59841112686004
1985	17.26958668780166
1986	14.667382511997518
1987	16.80040672004661
1988	17.72707916468737
1989	19.218430053318254
1990	19.997948846076394
1991	19.62850160641745
1992	19.26019677161062
1993	17.96112733714624
1994	19.106370188247595
1995	21.652126354650317
1996	22.533752103266522
1997	22.548278746752004
1998	21.364439520344902
1999	21.872576891565355
2000	24.63168694520024
2001	23.468299224076404
2002	25.333995574843033
2003	26.092966812069545
2004	27.904391317455936
2005	29.558183776024244
2006	30.506483195531864
2007	29.795519222253297
2008	31.31369782091778
2009	25.95725085207593
2010	27.42435927441217
2011	29.02120090589889
2012	28.583999756484396
2013	28.04063163176322
2014	26.346605347384237
2015	23.452812050181777
2016	22.62796508673808
2017	23.562599067642775
2018	25.802460909378862
2019	24.8020101780457
2020	22.394534937050736
2021	25.78029959992247
2022	28.551334917628214
2023	26.319453071437728