Year	% of GDP
1975	0.4287349548442251
1976	0.8378538876646404
1977	1.2661310239523063
1978	1.5360011577883823
1979	1.6542845821755605
1980	2.2808803023427138
1981	2.0219221676230203
1982	2.363846925850758
1983	2.424009599822867
1984	2.116282608705986
1985	1.9867704587369936
1986	1.8077065313989706
1987	1.7306249238333393
1988	1.4397808496948794
1989	1.544594280275001
1990	1.3899342639909056
1991	1.700058377364522
1992	1.5660966028987209
1993	1.7604503796975266
1994	2.217657524250872
1995	2.097188830523173
1996	2.3554845382355993
1997	2.6597231346728125
1998	2.404888821999764
1999	2.536749585387821
2000	2.6711182818387726
2001	2.906109758225945
2002	3.4908661022048584
2003	3.7633632631269154
2004	3.065117408816334
2005	3.1519073740573034
2006	3.482083434163109
2007	3.517434974198015
2008	4.597562208742581
2009	4.399542859365475
2010	3.937701454611899
2011	4.201909592537531
2012	4.638434202233312
2013	4.637629469962885
2014	4.429063960527073
2015	4.302458496597944
2016	3.6757176555257245
2017	3.4163112691033244
2018	3.7278580176964846
2019	3.822382361335099
2020	4.211563023646135
2021	3.8490990992991496
2022	4.078456050396987
2023	4.284011512206382