Year	% of GDP
1972	15.488436394310753
1973	11.307509995838837
1974	12.359266287160025
1975	13.837778367919876
1976	14.565253440937484
1977	13.62309961790833
1978	13.599952294818024
1979	14.650194584952303
1980	15.010660766115128
1981	14.880269298446944
1982	15.914716530567357
1983	14.167135477180556
1984	13.699989693515693
1985	13.89202504944417
1986	13.242602378191945
1987	12.656761256160753
1988	12.219621671197652
1989	13.109025354368892
1990	13.259624982922494
1991	13.18040869989455
1992	13.419288263203105
1993	13.118798608927623
1994	13.18788467124518
1995	13.050677729040194
1996	13.250052103398405
1997	13.051063668054239
1998	15.274520103950875
1999	14.845937547024024
2000	15.390920583689258
2001	16.330763868075827
2002	15.4395316010512
2003	17.30112639052265
2004	17.1688367256719
2005	17.819467546951383
2006	18.55190152361547
2007	18.021117225351535
2008	18.31723147260501
2009	19.30228794797219
2010	17.627125492359358
2011	18.13577496520361
2012	24.633441551813284
2013	24.032609926139667
2014	23.618894454303778
2015	23.489429429003465
2016	23.504548869689764
2017	23.962873265216743
2018	24.918035798704516
2019	27.51245135147829
2020	29.725928526115275
2021	30.491214375903404
2022	33.64303225917165