Year	% of GDP
1973	2.876885859693312
1974	2.9946635930355687
1975	3.4208025252426943
1976	3.8671083308046703
1977	3.7449614526707697
1978	4.291843169733322
1979	4.222364183204028
1980	3.9609253108557216
1981	3.869164026355367
1982	4.289455188627227
1983	4.667379325585408
1984	4.917684431323092
1985	4.57806713866195
1986	4.072784834676541
1987	3.2495113039671164
1988	3.025040842417342
1989	3.025524119375398
1990	3.437651783534187
1991	3.6121708312445904
1992	3.1151221789745613
1993	3.1412341189073003
1994	3.315764103761596
1995	2.6881619431134034
1996	2.2680085325749166
1997	2.1707601853230805
1998	2.5853639987023294
1999	2.6606045856520346
2000	2.475151201941645
2001	2.380412790792803
2002	2.2554406615302893
2003	2.043856031994519
2004	2.1705056320230427
2005	1.9007266904688989
2006	1.926104476093849
2007	2.071219780798352
2008	2.0987896011497016
2009	2.15451070313966
2010	1.848144205632008
2011	1.6418884850061737
2012	1.6500030317861927
2013	1.6275238170720732
2014	1.625311725204314
2015	1.6263324194885922
2016	1.4413586052637553
2017	1.3973534324195511
2018	1.2548536363572806
2019	1.2698590808263452
2020	1.3564202442339113
2021	1.3221936306329742
2022	1.2755130793762846