Year	% of GDP
1975	17.47081486987561
1976	16.322256538977953
1977	13.991962753833711
1978	13.08983546000227
1979	12.781833868425055
1980	13.66565882737204
1981	14.61187281729049
1982	14.840473573413886
1983	15.122723979545944
1984	14.109465662023672
1985	14.066926721740808
1986	14.110814170292107
1987	16.610492152916105
1988	16.659151462098517
1989	15.982097447221093
1990	17.337715739491994
1991	18.45814404707505
1992	19.03703045903295
1993	16.87177469958797
1994	16.657078831054548
1995	12.415489237738711
1996	13.149948386483915
1997	14.789625813151755
1998	16.0644112913142
1999	16.06011615197192
2000	15.086388545670824
2001	15.936037227648054
2002	16.60936140891032
2003	17.911626426748857
2004	16.57712708644831
2005	16.513624803050213
2006	16.89873098892764
2007	16.444547918837017
2008	17.051932141989912
2009	18.77647888599246
2010	18.471181036946113
2011	19.035077669915136
2012	18.7613757767741
2013	18.40596627137861
2014	16.73645049628495
2015	16.29890248929554
2016	15.179025609588312
2017	14.773211413969822
2018	14.533730994027938
2019	16.069216407711895
2020	19.32622753577899
2021	19.00100410668804
2022	18.550239406703387
2023	19.149716360762138