Year	% of GDP
1970	31.470618662711345
1971	31.41461493686817
1972	30.87604059094926
1973	32.44255162331457
1974	33.98096584945028
1975	30.26396578130765
1976	28.738993610270718
1977	27.826665011658907
1978	28.175145717052004
1979	29.660187243798653
1980	30.406750453100393
1981	29.85525520792287
1982	28.773684087563957
1983	28.629167364717706
1984	29.272353161242048
1985	28.229032534981542
1986	27.9106120300512
1987	27.540020083879735
1988	29.590865842055187
1989	30.318659696592192
1990	29.074638023724976
1991	22.908203776798352
1992	21.715694369087778
1993	22.82750735053904
1994	25.048209897629725
1995	27.14690154136521
1996	26.295269535573993
1997	28.592958928587542
1998	30.33683616381958
1999	30.8960257177976
2000	32.46214508728984
2001	32.52205658655309
2002	31.119432135016094
2003	29.24961614244575
2004	29.435996926139158
2005	28.951283343554746
2006	28.861113842345443
2007	30.65771467670202
2008	29.11332458240033
2009	23.78691257627361
2010	23.683581105860966
2011	23.476499762623863
2012	21.860652516700906
2013	21.28024040602777
2014	20.971304562173447
2015	21.14435745204248
2016	21.997259996873822
2017	24.05292066760642
2018	24.012473121964174
2019	24.246846050579926
2020	24.59985380485469
2021	24.128315194842497
2022	24.0792418010587
2023	22.35461503827105