Year	% of GDP
1960	2.678571565233243
1961	2.5862069984712117
1962	3.278688432449037
1963	4.511278234253734
1964	5.369127352049784
1965	6.945107042757469
1966	7.099140670332403
1967	7.26555990000641
1968	7.799750467872739
1969	8.285765787418134
1970	9.771600491546252
1971	10.584576720892075
1972	12.923585578410218
1973	11.582789641594573
1974	12.582798506776513
1975	11.545967598415817
1976	8.707040097632616
1977	11.150975482059005
1978	13.794534989794302
1979	12.848901024782498
1980	9.217714441730273
1981	9.069623983250434
1982	10.659064590415616
1983	8.315285421923742
1984	7.81917814015283
1985	7.831919937171719
1986	9.839578428728654
1987	9.692140425166663
1988	10.706483114421838
1989	10.184278868187143
1990	10.816080215393185
1991	10.76839328356096
1992	19.237589002101572
1993	20.49144377746643
1994	17.413924852042822
1995	19.0502875515238
1996	19.99239832763208
1997	16.77362893815636
1998	17.141429285357322
1999	18.15985946420729
2000	14.856698326361842
2001	15.533073816584828
2002	14.732986844907142
2003	17.46133527299
2004	19.227266295452537
2005	14.09999966894104
2006	15.2
2007	19.000000681555935
2008	20.20000115114599
2009	19.700001232027795
2010	21.900000279882786
2011	22.900000496535952
2012	23.299824294429534
2013	24.70016952260096
2014	25.90000618877089
2015	22.422383442456905
2016	23.473193630272277
2017	25.086288811733965
2018	26.21026745849328
2019	27.24476999915526
2020	31.344300000757013
2021	30.772469999772113
2022	30.975452702524432
2023	30.505308964988654