Year	% of GDP
1976	13.235905747741118
1977	12.673899472240215
1978	12.62957036813146
1979	12.553491304322018
1980	12.786334617511297
1981	13.308905953940467
1982	13.128145056150558
1983	12.97271290581993
1984	14.999988135226348
1985	17.005361896875804
1986	19.183337498382464
1987	20.270384729130217
1988	20.114078496427815
1989	19.71413009787837
1990	20.372257094173385
1991	20.124681038470147
1992	20.24912089485927
1993	19.77153816537974
1994	19.46991950194186
1995	20.070321222875737
1996	20.523464939055653
1997	20.505318788698673
1998	20.754335396325523
1999	19.881112654503482
2000	19.483514545823592
2001	19.774922998348202
2002	18.81131400014122
2003	17.79013570902012
2004	17.303584828909045
2005	16.667948872433016
2006	15.824471665096246
2007	15.466809816191308
2008	15.31060248932293
2009	14.909033576001866
2010	14.164315147894024
2011	13.866147280937072
2012	13.647745291520744
2013	13.721645633010166
2014	13.52413257366661
2015	13.008628390064047
2016	12.38304812117421
2017	11.839420040984558
2018	11.324935456067129
2019	10.520046552680293
2020	10.816398365688366
2021	11.698241671487676
2022	11.80912264484571
2023	11.209296045222013