Year	% of GDP
1970	25.607205277753557
1971	25.208238766288577
1972	25.502708235332445
1973	26.6061257183248
1974	25.773306996407243
1975	23.534543574679883
1976	24.069956777860178
1977	24.295183279916724
1978	25.195434107732112
1979	25.06515088561379
1980	24.038628218501465
1981	24.223834283111366
1982	23.042844620818308
1983	22.812171755575154
1984	24.005556038256294
1985	23.760367528134225
1986	23.99244107765989
1987	23.9688488827452
1988	24.823025849386347
1989	25.00908637767707
1990	24.58679074949567
1991	24.34433555129882
1992	23.721404578714637
1993	23.55634177212196
1994	23.90557643669557
1995	24.69489911937304
1996	24.464782906200625
1997	24.505477434548013
1998	24.23381010577357
1999	23.765339384239553
2000	23.615213557244648
2001	22.570550786103745
2002	21.884431898455993
2003	21.701487624855417
2004	22.208589772238547
2005	22.23643021609338
2006	22.62288986822183
2007	22.926617868583307
2008	22.097448945996437
2009	19.982847217884956
2010	20.51189460346198
2011	20.942619023224722
2012	21.110252027656614
2013	21.4025031922657
2014	21.810868721374757
2015	22.247588986070557
2016	22.230275989443978
2017	22.67853339961004
2018	22.88262036113842
2019	22.940820128721366
2020	22.69629548073802
2021	23.009217932030044
2022	22.59675962038213