Year	% of GDP
1972	13.776704445806821
1973	13.481500873699083
1974	13.9664612935006
1975	13.779379765663412
1976	13.923561320940196
1977	14.38650930917102
1978	14.311626448479084
1979	14.494717225829557
1980	14.851857136716305
1981	15.203311877802635
1982	15.124201244735863
1983	14.471797575622146
1984	14.302901627602795
1985	14.520329055375022
1986	14.542233314150714
1987	14.891186087273105
1988	14.652585732300388
1989	14.605120724751977
1990	14.511919572703711
1991	14.45526765459697
1992	14.126603870111273
1993	14.017927826251348
1994	14.603289513867482
1995	15.081531602861983
1996	15.389246488271151
1997	15.851283964664864
1998	16.11787525873115
1999	16.28368351918988
2000	16.70664828285683
2001	16.33040596661635
2002	15.182982203828976
2003	14.872853818547505
2004	14.935600360020736
2005	15.61244222395891
2006	16.055891291584285
2007	16.14163192080291
2008	15.462046649288336
2009	13.981285887496936
2010	14.34464406585549
2011	14.856147637665638
2012	14.926889373851303
2013	15.363438573106116
2014	15.544341717588019
2015	15.71496375265313
2016	15.653183551555655
2017	15.99545567770365
2018	15.461730884430239
2019	15.416351947208407
2020	15.418020736053434
2021	16.26927793331238
2022	16.791110028269824