Year	% of GDP
1970	19.508359543122
1971	19.84480639213276
1972	19.252392344497608
1973	20.12108262108262
1974	21.24637129396088
1975	20.84459038197764
1976	20.61389869573966
1977	20.177761261052012
1978	18.495518736203824
1979	18.050105309832613
1980	16.948939225333188
1981	17.27903419601707
1982	16.086183056754688
1983	19.458132592670747
1984	21.545831213894147
1985	19.015627996954436
1986	16.933180790945585
1987	16.296145640326277
1988	15.735381120988604
1989	15.263140136201288
1990	15.353599269531317
1991	15.54209575314211
1992	14.404204305204605
1993	14.647962291689861
1994	15.244286726674197
1995	14.859299108332403
1996	14.184679383774897
1997	14.918259234341358
1998	12.625431376212054
1999	13.257991579513911
2000	12.965811884223765
2001	13.255653666174243
2002	12.955118631020953
2003	13.427236956279101
2004	13.322383638847707
2005	11.792721532911195
2006	10.93754805462884
2007	10.011155665671996
2008	10.442404115522647
2009	11.152407449731106
2010	10.389905701059378
2011	9.769585881695395
2012	9.812161914832803
2013	9.966979476846303
2014	9.740217537701692
2015	10.239494114445522
2016	11.17187541505321
2017	11.589335938215314
2018	11.481924151985146
2019	12.22175758248909
2020	14.0009305366582
2021	12.922923305610832
2022	12.46872564869134
2023	12.534006190122149