Year	% of GDP
1960	4.56846950517837
1961	5.82795698924731
1962	6.18034447821682
1963	7.58181818181818
1964	6.957928802589
1965	8.51978171896316
1966	8.45191040843215
1967	7.56648936170213
1968	8.65882352941176
1969	9.2103948025987
1970	8.2514386896857
1971	12.584
1972	10.0603907637655
1973	5.34333047700657
1974	5.67682403433476
1975	5.78440280143858
1976	5.90269690468894
1977	5.01836423900385
1978	3.52115696178405
1979	2.8188647154702
1980	2.19261644730701
1981	1.84738248010354
1982	1.80235046442493
1983	1.54226844456036
1984	2.20940933837471
1985	3.10839882465428
1986	3.62810988808998
1987	3.15415549597855
1988	3.13928135190773
1989	5.84456546435471
1990	4.92869864550594
1991	3.65734044783811
1992	4.9419292690541
1993	4.83817566695075
1994	5.25003266090298
1995	5.07356450843041
1996	6.00507906550134
1997	8.19509402411892
1998	9.3588471656594
1999	12.5620832397761
2000	13.971491324036
2001	11.8843912608955
2002	12.1495373048323
2003	12.493048761649
2004	13.1724893671741
2005	15.5440688136274
2006	10.8575870160572
2007	14.4884302260337
2008	12.6134904703492
2009	17.7369732584538
2010	16.6607748086712
2011	17.1952826473504
2012	18.0717128637123
2013	15.2923716479322
2014	16.5048906269026
2015	17.9335670472186
2016	17.4356386560413
2017	16.0995201444141
2018	13.7141432192203
2019	13.9372113856401
2020	13.058528858537
2021	13.0544311231372
2022	13.2885237880865
2023	9.96377584335041