Year	% of GDP
1980	18.560046504188982
1981	15.772648121333022
1982	12.580120278156503
1983	12.056820036305831
1984	11.856489058365174
1985	12.989608379855733
1986	13.631272872634725
1987	17.64634415519887
1988	17.69673267313582
1989	16.210871869592893
1990	14.390704530236187
1991	13.39300680588347
1992	11.794200245343422
1993	10.136426067161958
1994	12.858953031329392
1995	13.680568481815165
1996	12.448481072271809
1997	11.680651765253232
1998	10.947249642906339
1999	13.643369943231553
2000	12.871782703277413
2001	11.415766019347398
2002	10.35147124889744
2003	10.143698252738314
2004	9.863467719155032
2005	9.001187322693491
2006	8.318712134592399
2007	6.094687071370928
2008	5.31578241870627
2009	6.026322465855723
2010	5.829092770071329
2011	5.399253270011208
2012	5.790887584945639
2013	5.823591256030628
2014	5.735069238632867
2015	6.408286376027197
2016	6.3135227735371195
2017	5.375335026196448
2018	4.5227686741032125
2019	4.4373608669529965
2020	6.191327454851822
2021	5.971474059231829
2022	4.736457029660572
2023	4.452563310382038