Year	% of GDP
1970	20.698377150544957
1971	19.589502631770284
1972	18.508941941782766
1973	18.479753352686867
1974	20.27721331315579
1975	21.28747288685631
1976	18.443483381283457
1977	18.771809226867596
1978	17.10184861509359
1979	17.39168648642929
1980	17.31977537308361
1981	15.429953327206547
1982	14.717361507730667
1983	16.122492488253947
1984	16.76173403408627
1985	19.39962367445313
1986	17.733440747937042
1987	16.946505857573303
1988	15.050181241615606
1989	14.778345240521459
1990	15.307288644781671
1991	15.542626654749043
1992	15.142921690542789
1993	14.322108385077586
1994	13.929367140352667
1995	14.220013493682252
1996	14.128373919279014
1997	12.733612148877418
1998	12.364422111886373
1999	12.13686142485974
2000	11.271406354703284
2001	10.429183350579356
2002	9.449766568605288
2003	8.92826404639726
2004	8.597271592715185
2005	8.260100546378087
2006	8.040114264476356
2007	7.1572179321958735
2008	7.073095402402124
2009	7.285933362618185
2010	7.096737737032162
2011	6.338251119479729
2012	6.231557493624736
2013	6.631374191610069
2014	6.605784292908452
2015	6.390802302751989
2016	6.174999179729121
2017	6.05777466251465
2018	5.723513709713797
2019	5.657542253228863
2020	5.6065194588124045
2021	5.205205181727716
2022	4.968368918877935
2023	4.680468577997035