Year	% of GDP
1972	20.688527046777413
1973	21.242620688145518
1974	22.29792717673454
1975	22.182153135613333
1976	22.310173703974318
1977	23.261578531919582
1978	23.184537529553992
1979	23.5960372900498
1980	24.607094501093872
1981	25.34512912972445
1982	25.597340033338256
1983	24.91266247762212
1984	24.767900719166665
1985	25.25713634740105
1986	25.35114577653504
1987	25.418457459739123
1988	24.999201711984064
1989	24.943795611799754
1990	23.97665292597375
1991	23.787588130638927
1992	23.533121720000754
1993	23.618415718753624
1994	24.250580909075737
1995	25.921508265232585
1996	26.403354739944167
1997	26.504090473684045
1998	26.262109946737066
1999	26.41747694423425
2000	27.174518047963375
2001	26.63568061042941
2002	25.615033186767366
2003	25.171745060794777
2004	25.06460453035788
2005	25.839273458649647
2006	26.196619402300403
2007	26.378242830310704
2008	26.111311225136863
2009	24.51830018967128
2010	25.418373333466135
2011	25.332096697873926
2012	25.688073712168205
2013	26.624177451043828
2014	26.511276617621874
2015	26.2093025686532
2016	25.999277393558614
2017	26.424351468533338
2018	26.017272447292413
2019	25.968071047523665
2020	26.116999616440744
2021	26.766921262735963
2022	27.366877605826748