Year	% of GDP
1972	20.13569217538622
1973	20.696399537543062
1974	21.574962041318305
1975	21.74470591815835
1976	21.87888036803279
1977	22.602927279676614
1978	22.589091492126776
1979	23.06244575796509
1980	23.875818764505137
1981	24.476288797627145
1982	25.024586614665868
1983	24.22051955682089
1984	23.954670168754543
1985	24.42488741945002
1986	24.370736393640772
1987	24.71198348836806
1988	24.328183418671927
1989	24.287562922871295
1990	23.22515727155325
1991	23.288843195334476
1992	23.077131031947225
1993	23.010480120212545
1994	23.73368808728243
1995	25.408352626019113
1996	25.715421348188862
1997	26.020793243714692
1998	25.86224358998441
1999	26.222052583813504
2000	26.666816003209732
2001	26.557351749459535
2002	25.309543734932223
2003	25.000596758897213
2004	24.938466517953884
2005	25.6137042144845
2006	26.059688906540124
2007	26.122330653742793
2008	25.65596156669457
2009	24.37420837998336
2010	25.049585718139355
2011	24.947124854535172
2012	25.39610842534814
2013	26.43768484970308
2014	26.347652397756463
2015	26.363988056199343
2016	26.25429862619443
2017	26.56280858836045
2018	25.983488248414158
2019	25.88679254667369
2020	26.05923044945518
2021	26.779046380894027
2022	27.28984962021667