Year	% of GDP
1972	18.932010697087502
1973	19.536128161411778
1974	20.274127404628143
1975	22.211392229220895
1976	22.576451887423286
1977	22.653649367968857
1978	22.940483758547494
1979	23.18039014395558
1980	24.265677342930097
1981	24.39354479588668
1982	25.847806200324932
1983	25.87848432781878
1984	25.24973564786875
1985	25.52189905278977
1986	26.272034808586962
1987	25.87863826508336
1988	24.996161868877852
1989	24.54355989515891
1990	24.704803900292738
1991	27.387860115895503
1992	27.688443076187642
1993	27.95053328335361
1994	26.207402048759807
1995	27.40075031250169
1996	26.49781129235052
1997	25.724846423232222
1998	25.48661740833856
1999	25.024768725027446
2000	24.619705747352597
2001	25.70003375494624
2002	26.139881750501907
2003	26.50657564213803
2004	26.05586619580383
2005	26.209639710801174
2006	25.904759325735878
2007	25.69197294109792
2008	27.063248679319432
2009	29.63123729817683
2010	29.723137347342142
2011	28.99414422337073
2012	28.95649885671808
2013	28.37709400334689
2014	27.999151199118327
2015	27.61829822493344
2016	27.48630465538023
2017	27.196746998191927
2018	27.163759306005577
2019	27.420551511015503
2020	34.636482960322525
2021	33.26853920883636
2022	29.948990529420794