Year	% of GDP
1970	19.716798970178072
1971	17.69633507853403
1972	16.613163999343907
1973	20.2051634613645
1974	22.99810246679317
1975	22.02947759778444
1976	21.314465756453487
1977	23.87078745277594
1978	27.33029875370212
1979	28.2097258527944
1980	25.76985331692054
1981	22.000491244176544
1982	23.796140807797983
1983	24.48263148849664
1984	24.28462183473234
1985	23.805255209083885
1986	24.176536959464315
1987	25.360852866691097
1988	25.739359031526487
1989	27.767189499752114
1990	32.071858162450226
1991	32.9877256412974
1992	30.92100332635778
1993	30.54962334377071
1994	30.74564542620084
1995	31.58595826712264
1996	31.963168448911876
1997	29.928037139360054
1998	24.967066276779533
1999	24.73775600089948
2000	26.436250142718066
2001	25.349731330583676
2002	25.32084140340262
2003	25.64494575244965
2004	25.443926241844256
2005	25.157684836708594
2006	25.423957700938193
2007	25.189403081804766
2008	25.73376831816215
2009	24.39124411985023
2010	24.989823161939047
2011	25.171188445381116
2012	24.765966021795258
2013	24.31676142714335
2014	24.62368569677098
2015	24.677193356607674
2016	25.289152055780068
2017	27.08621166594814
2018	25.871589637426677
2019	24.995093525943204
2020	26.05389673205834
2021	26.675641771686692
2022	27.267204030911834
2023	27.15919667290516