Year	% of GDP
1970	26.92219550708364
1971	26.173191989670357
1972	25.292769344496378
1973	25.354295542769822
1974	26.900067904321812
1975	26.583182480011082
1976	26.02409433903433
1977	25.510814358538703
1978	25.51102237647044
1979	24.352847215326907
1980	24.819757366250094
1981	21.55826799499539
1982	20.29564008061292
1983	18.72058050627702
1984	18.36695068937467
1985	18.821900990325446
1986	18.665553422137833
1987	19.108630188651215
1988	21.075641728588813
1989	22.83655657605001
1990	23.98038129107881
1991	22.391685821109526
1992	22.098151507620656
1993	21.318091006929734
1994	20.798482781212495
1995	21.231740740969485
1996	21.1846630058459
1997	21.854293701737827
1998	21.780488496877794
1999	22.166535428521435
2000	22.50706383270847
2001	22.390270826894213
2002	20.696424121126018
2003	20.49418883770353
2004	21.461850409524704
2005	22.153893592261063
2006	22.325439064559134
2007	23.293014441289465
2008	24.118141905271205
2009	22.784501409634466
2010	22.123086929810285
2011	23.010374824652537
2012	22.96188745663556
2013	22.17300447973936
2014	22.805843029076932
2015	22.963421769161325
2016	23.277754436154872
2017	23.27850280226878
2018	23.62267384384507
2019	24.283450900629695
2020	24.12382375983421
2021	23.934400028972888
2022	23.89114523874094
2023	24.591871132304167