Year	% of GDP
1972	17.88878549678853
1973	18.19695102063463
1974	18.39734103158554
1975	18.010925405413886
1976	17.862332320585164
1977	17.99929320414486
1978	18.777549741695303
1979	18.55011633381509
1980	18.578004584115288
1981	18.94982564852362
1982	18.190420396576283
1983	18.03258878485609
1984	18.964077512268215
1985	18.103784077415295
1986	17.972336757980944
1987	17.720084156552648
1988	18.5628007757016
1989	17.805751869942775
1990	17.98108333382361
1991	18.167178555984513
1992	18.92048050260309
1993	18.935455769490435
1994	18.345573061434933
1995	24.60010616688018
1996	25.940036007276834
1997	26.797712169363308
1998	26.889845462572538
1999	26.627822201928492
2000	26.22507987585395
2001	27.965571988455917
2002	26.975500321476304
2003	26.646969932088187
2004	26.308672486445744
2005	25.513955464257943
2006	25.050442556682185
2007	25.391994315615396
2008	26.077519716562303
2009	25.22516523689678
2010	25.281635506236235
2011	25.427985275530485
2012	25.928197640920043
2013	26.41517309427119
2014	26.417898311092188
2015	26.826167415542773
2016	25.419169232675053
2017	25.42222617618868
2018	25.417502121671355
2019	25.58283491820753
2020	24.43074542085103
2021	25.850676863189353
2022	26.237804483740845