Year	% of GDP
1963	2.884416927004294
1964	2.884696225925055
1968	3.2171391297135985
1969	3.342871132970198
1973	2.9866320403241375
1974	3.6459600660004567
1975	4.390350842241564
1976	4.467024475817368
1977	4.384227887855151
1978	4.146075789762055
1979	3.354845259411534
1980	3.009536900043917
1981	3.24262099730925
1982	3.33183423935912
1983	3.3737760106951447
1984	3.146633151374268
1985	3.2515030397532922
1986	3.429755738518055
1987	3.256189481509688
1988	3.0319786281629506
1989	2.663387578217542
1990	2.406058297683088
1991	2.1991765990225605
1992	2.0845559733814616
1993	1.9935228266093155
1994	1.9592697619420687
1995	1.9612436154596773
1996	1.8875325565846588
1997	1.8299727071011689
1998	1.8059217802112084
1999	1.9252909463756909
2000	1.8292984359702078
2001	1.8836626340003877
2002	1.9171011624550207
2003	1.8639617341442585
2004	1.8147431322848693
2005	1.7765037180894492
2006	1.7228561881664404
2007	1.6939008144143777
2008	1.7026886869610414
2009	1.9011004345838551
2010	1.7637445658392243
2011	1.6714417989090309
2012	1.7042613181790576
2013	1.7242040201440652
2014	1.7520790726890048
2015	1.763102320700577
2016	1.7596825628727928
2017	1.7285212309976086
2018	1.684213323988492
2019	1.687690910494463
2020	1.7809641141715495
2021	1.626132108168786
2022	1.6834278622971712