Year	% of GDP
1974	9.299178345100415
1975	9.341637010676157
1976	8.92804187418553
1977	9.083558223526751
1978	5.789021155099676
1979	6.276306498396139
1980	6.437492365195796
1981	6.287255421635035
1982	5.30059329947926
1983	5.632500693889323
1984	5.783966691806927
1985	5.6658423762793015
1986	5.428131108308013
1987	5.20279290604547
1988	5.995543993030583
1989	6.998819236962121
1990	7.253693015629069
1991	8.641184069202158
1992	9.005400027916146
1993	13.099969752414617
1994	15.410528767722564
1995	14.563964645558192
1996	15.660507393463869
1997	17.528020451356056
1998	19.79001981330745
1999	23.618289052237596
2000	26.743655644108248
2001	25.693129980882016
2002	27.363073183076693
2003	26.05092013583973
2004	27.533303367987948
2005	27.706050394853186
2006	26.23720694033501
2007	23.547620737546186
2008	23.45602728966759
2009	19.44040992142124
2010	20.689197556048953
2011	20.902231496139322
2012	21.031747973202076
2013	21.796092803135334
2014	21.917645487811917
2015	21.95160534550995
2016	20.858111995041828
2017	20.824922509611266
2018	21.381742983336185
2019	21.69033215460403
2020	16.246671862867586
2021	20.212517949228122
2022	21.881776528185522
2023	20.826422253712646