Year	% of GDP
1981	17.92795426623684
1982	17.299641729774443
1983	17.06504926358848
1984	15.054817792787093
1985	14.567548633940605
1986	15.513515112221624
1987	15.776353039512102
1988	16.364098547476157
1989	16.17215811298255
1990	16.189744263611093
1991	15.91282095931454
1992	16.50401562715681
1993	16.140863615732016
1994	17.13753507639905
1995	17.359097425120336
1996	16.64783689096038
1997	16.672577411484863
1998	15.913084806912797
1999	14.295685017331389
2000	13.865581939898775
2001	13.843443896809863
2002	12.990748047493547
2003	13.347265228443325
2004	13.03419770932725
2005	12.347687876273177
2006	11.135026877943934
2007	10.866297152268269
2008	10.358784124359097
2009	10.647578518086412
2010	9.938751858648308
2011	9.85476149286065
2012	9.70841724079373
2013	10.081032791694284
2014	10.21888308005055
2015	10.246115491119259
2016	10.28487536793114
2017	10.34785131358898
2018	10.632065743705352
2019	11.028997309489046
2020	11.076038379352346
2021	11.556194731048954
2022	11.400407825310387
2023	11.185349327128206