Year	% of GDP
1962	3.807101770559533
1963	4.093230087164123
1964	4.0194428883536215
1965	4.072233863596216
1966	4.24831480233389
1967	4.824869603974928
1968	5.021355289847586
1969	5.663148942144152
1970	5.341824647915848
1971	6.354068565369975
1972	6.889386447615752
1973	7.34999207678534
1974	8.224829798311472
1975	9.924893875059979
1976	11.494808379171763
1977	11.86220562654925
1978	13.536848753244929
1979	14.37654994305772
1980	14.704339991637589
1981	15.946600529464483
1982	12.515233968880663
1983	12.034347216255801
1984	15.822082709686777
1985	16.7035233426218
1986	18.35776373528091
1987	17.053092505265926
1988	19.406933751777288
1989	20.057658630997576
1990	13.992623584243708
1991	13.156526917425609
1992	13.476126510083589
1993	13.983512320063674
1994	11.988979748498865
1995	11.645607617801321
1996	10.159819930361156
1997	7.35979275712173
1998	5.143200485810125
1999	5.926218771247588
2000	6.559002481610893
2001	8.653164071364806
2002	6.556239132372112
2003	9.299982065022169
2004	10.049992001260701
2005	9.034317216741522
2006	9.384470959556833
2007	12.427591543632772
2008	11.457517729827051
2009	13.016874911840642
2010	14.20580430702302
2011	14.261474866462793
2012	16.135665787798388
2013	16.87636421713112
2014	19.848348792894697
2015	19.447508795301346
2016	19.63432713665921
2017	17.713017580610643
2018	15.794315466816816
2019	17.157756560352013
2020	19.16575152893637
2021	20.11598751684035
2022	19.342689596224407
2023	18.083737654567734