Year	% of GDP
1960	16.767730061349692
1961	15.532881355932204
1962	15.467157894736841
1963	16.46254716981132
1964	16.9501593625498
1965	17.387765567765566
1966	17.694276315789473
1967	19.10671686746988
1968	19.15316076294278
1969	19.18716748768473
1970	19.969954954954954
1971	17.974020408163266
1972	18.960849557522124
1973	19.296642547033287
1974	19.87492222222222
1975	21.418827272727274
1976	21.03716265499635
1977	19.65001622498648
1978	21.070830124090715
1979	23.41769230769231
1980	23.457213229030824
1981	25.001052458025868
1982	21.59830383463473
1983	16.72628032738266
1984	17.10015683196773
1985	18.041758045607146
1986	18.725865548145638
1987	17.540442498496937
1988	18.678730728528688
1989	17.371305757082666
1990	17.979459106598004
1991	18.731027435632065
1992	19.622595017985155
1993	20.05541521085224
1994	21.666265227320636
1995	16.213630091317867
1996	17.71497349821066
1997	19.394799246083014
1998	21.015355546150573
1999	20.899023756558748
2000	21.230361515536714
2001	19.673436527877293
2002	19.367930999263663
2003	20.104041311379945
2004	20.780907227933
2005	20.71034971372285
2006	21.679948184568225
2007	22.354881849929484
2008	23.559173962027693
2009	22.77438581056369
2010	22.553097155691646
2011	23.472068792385162
2012	23.688207336807128
2013	21.990185784814482
2014	21.671307068932933
2015	23.164182997658628
2016	23.727719438068114
2017	23.225539775954424
2018	23.047472794236974
2019	21.63719076956378
2020	20.077792909864854
2021	21.21980307117373
2022	22.363866468108004
2023	24.405586159334984