Year	% of GDP
1970	16.6066691413209
1971	16.94398245010772
1972	16.843219209109524
1973	16.418814835612284
1974	17.031242155944533
1975	18.059790022233813
1976	17.66442278895868
1977	17.512227252953274
1978	17.256129865182714
1979	17.181101449205098
1980	17.676805368109722
1981	17.696876268873954
1982	18.024164526799826
1983	17.841662559734512
1984	17.265620120478804
1985	17.267334609070367
1986	17.33020794021517
1987	17.344207827275465
1988	16.935220564032846
1989	16.72871308771602
1990	17.070466899224655
1991	17.314202863411037
1992	17.501825420202945
1993	17.294161983537332
1994	17.01699496717355
1995	16.873800878027907
1996	16.759959066133
1997	16.440766015057967
1998	16.402896554081046
1999	16.459077021644035
2000	16.308701976808994
2001	16.71713181543022
2002	17.239886496853714
2003	17.622465566781738
2004	17.605665703659657
2005	17.559341499613158
2006	17.47759273756829
2007	17.51559039025487
2008	18.12556988650762
2009	19.321157846854152
2010	19.047135617239277
2011	18.765298078291853
2012	18.475934175610124
2013	18.24082565394096
2014	17.9781350746818
2015	17.526716889143827
2016	17.476354192445232
2017	17.247722627294113
2018	17.270199770863236
2019	17.408265034081204
2020	18.81012868233305
2021	18.370943849205084
2022	17.77354442450367