Year	% of GDP
1975	0.4287349548442251
1976	0.8378538876646404
1977	1.2661310239523063
1978	1.5360011577883823
1979	1.65428458217556
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	1.389934263990906
1991	1.700058377364522
1992	1.5660966028987209
1993	1.7604503796975268
1994	2.2176575242508716
1995	2.0971888305231734
1996	2.355484538235599
1997	2.659723134672813
1998	2.404888821999764
1999	2.536749585387821
2000	2.6711182818387726
2001	2.9061097582259454
2002	3.4908661022048593
2003	3.7633632631269154
2004	3.065117408816334
2005	3.1519073740573034
2006	3.4820834341631084
2007	3.517434974198015
2008	4.597562208742583
2009	4.399542859365475
2010	3.9377014546118994
2011	4.201909592537529
2012	4.638434202233313
2013	4.637629469962885
2014	4.429063960527074
2015	4.302458496597944
2016	3.675717655525726
2017	3.416311269103325
2018	3.727858017696484
2019	3.822382361335099
2020	4.211563023646134
2021	3.8490990992991487
2022	4.078456050396986
2023	4.284011512206382