Year	% of GDP
1972	11.102227639271078
1973	12.3871399232195
1974	13.024975306389047
1975	15.150816068471581
1976	16.987224778520936
1977	17.23841462427407
1978	16.942490306789214
1979	17.03958347605787
1980	16.657238244896305
1981	15.997550918737263
1982	16.731418497837577
1983	17.147144810677876
1984	17.23297626533413
1990	14.035926068572868
1991	15.087911611904833
1992	16.39223354080947
1993	17.58273363992582
1994	17.67921387028362
1995	17.621135865513985
1996	18.304333315288847
1997	18.528987408057066
1998	18.522289765812555
1999	19.210670798250323
2000	18.516531788551962
2001	17.520218340786382
2002	19.481950458092296
2003	18.341598523591518
2004	18.170167923006407
2005	17.822231307471924
2006	16.891722117610477
2007	16.35430431015869
2008	15.839785119789488
2009	16.918582516051025
2010	16.719744542920687
2011	16.637679183776473
2012	16.521926184055616
2013	16.788762009809208
2014	16.719264503192637
2015	17.067444663001737
2016	17.24082284968258
2017	17.216217139699772
2018	16.71822365408867
2019	16.853060501353514
2020	20.04319547562949
2021	19.010479396746074
2022	16.659795715868952