Year	% of GDP
1973	15.54750830957738
1974	15.057847976708368
1975	16.305059426020605
1976	16.347772253284067
1977	16.140854898290872
1978	20.53394925024507
1979	21.281270955437638
1980	21.59133406738073
1981	18.09021273871277
1982	16.62477154156388
1983	20.97220718561022
1984	20.023200902516336
1985	19.50790168543016
1986	24.25588847076782
1987	25.56114677573881
1988	23.21420197928306
1989	24.359566453719054
1990	24.249882231524694
1991	18.418004278720204
1992	17.781649600096692
1993	19.363446957795663
1994	23.00190167346317
1995	21.541323845043507
1996	22.49141495048266
1997	21.394564229391527
1998	21.061790973334972
1999	22.123697144622252
2000	22.0341229169995
2001	22.758674901849655
2002	24.594916513050055
2003	23.621898432040826
2004	22.52538600972791
2005	22.646362811063845
2006	21.601230328141398
2007	21.160807859492788
2008	21.668939388092692
2009	24.744992506910815
2010	25.613628333307346
2011	25.378520707735426
2012	25.94468316213492
2013	26.517739577865335
2014	26.73585810893202
2015	28.55489407126801
2016	27.146733417133124
2017	25.396728374994282
2018	28.9192248274544
2019	29.6382263485902
2020	32.25344488838265
2021	29.369607546940617
2022	28.593521935505084