Year	% of GDP
1972	12.483833134797079
1973	11.921657088435248
1974	10.334885161021491
1975	12.52357462197227
1976	13.046753024600743
1977	12.310532611901012
1978	13.029905461382867
1979	13.973340830269162
1980	15.363738330689062
1981	15.427641545365988
1982	16.337578786202304
1983	16.183472193642455
1984	16.34651359496958
1985	17.01448140422393
1986	16.312201046250753
1987	14.901458990544391
1988	13.101966775785758
1989	12.514593148087247
1990	11.777774414816218
1991	11.660093720419665
1992	11.50328116066393
1993	11.33771686564978
1994	11.224882016974377
1995	10.806868528035045
1996	11.185089307041515
1997	13.231995346378476
1998	16.456030592444666
1999	19.549227884269698
2000	13.503921243752243
2001	15.743456946032378
2002	20.191455491721403
2003	14.854366687563505
2004	15.491559523706114
2005	15.314981027422869
2006	15.064896213247106
2007	16.551141390782433
2008	17.058948303835333
2009	18.411805894125973
2010	17.411415372388138
2011	19.41745835874005
2012	18.621619617438526
2013	19.093726531129235
2014	19.304782119278592
2015	18.68254990954103
2016	18.929196346806727
2017	18.38132089701042
2018	18.34251412800837
2019	17.921486968699003
2020	22.086246800394363
2021	24.333892757347435
2022	21.502429409198633