Year	% of GDP
1972	17.84182997732732
1973	17.01926936973103
1974	18.057718432126173
1975	19.87509648445723
1976	20.300427124826033
1977	20.53470266000021
1978	20.40587104266215
1979	19.76993877946291
1980	20.412741806079694
1981	21.462607805300674
1982	21.586288859698506
1983	21.7150972483264
1984	21.01307525996088
1985	22.493471198963885
1986	22.55555512962544
1987	23.21225899501664
1988	23.12984484182246
1989	22.64421967279886
1990	22.430225231347066
1991	22.328993718112013
1992	20.64044075781237
1993	19.980820357434702
1994	20.007886655050996
1995	21.159593906172482
1996	21.872359249785905
1997	22.375575974778368
1998	22.228803204127352
1999	22.41499371991631
2000	23.024141583946253
2001	24.85786017003062
2002	23.54814487749291
2003	24.299969618033938
2004	24.258265062973837
2005	24.754549717864542
2006	24.51177238554
2007	24.039345358178846
2008	24.207695809445173
2009	22.02100613504714
2010	20.47706919987335
2011	20.321206554677648
2012	21.09748329615445
2013	21.941858082728164
2014	21.8929233385114
2015	21.86642359083
2016	22.261799129080327
2017	22.08871544375342
2018	23.177203056825377
2019	23.37575293250094
2020	22.55751542629792
2021	23.02727606526111
2022	23.598664678570955