Year	% of GDP
1972	18.67533827372983
1973	17.844251105367782
1974	18.873364252386608
1975	17.721820162499746
1976	18.839990135167785
1977	18.24079444988325
1978	18.257184035333662
1979	18.83168970620582
1980	19.291919152362375
1981	19.367573216490328
1982	19.600212561441424
1983	19.44421464967272
1984	19.567413425590146
1985	19.65146057759569
1986	19.659769088959433
1987	19.87064583864434
1988	19.212449948706407
1989	18.90600144149717
1990	18.734247316117948
1991	18.918226150515476
1992	18.466692568787686
1993	18.384076566547357
1994	19.084116977562303
1995	19.46320734351003
1996	20.385764685777623
1997	21.10085498117618
1998	23.026993200660407
1999	23.632065404757604
2000	23.391891572009726
2001	23.374463658822002
2002	22.567165607883467
2003	22.116852868705177
2004	22.162957103177842
2005	22.2954802211897
2006	22.577808847870116
2007	22.121966044422468
2008	22.005239964263843
2009	20.70142768466791
2010	21.952659489427344
2011	21.816447876935573
2012	22.53074007901172
2013	23.210917872707633
2014	23.161415317488192
2015	23.19771546265702
2016	23.064827501008224
2017	23.62933465433768
2018	24.17084372484985
2019	24.51466277765129
2020	24.65933682855358
2021	23.96329829368559
2022	24.62013450080558