Year	% of GDP
1970	16.485326816316707
1971	16.834032506931926
1972	16.74299210588481
1973	16.36416232336339
1974	16.953101684535493
1975	17.960097339104728
1976	17.579447395562493
1977	17.44453408794226
1978	17.189809048660237
1979	17.098960245205426
1980	17.539190146474347
1981	17.51579055387809
1982	17.9008151878007
1983	17.713366406790414
1984	17.143655170512165
1985	17.118125720900952
1986	17.247492403537777
1987	17.27962802766473
1988	16.87677793373125
1989	16.65997835842368
1990	17.005252023372133
1991	17.231759318160304
1992	17.419498316089037
1993	17.136236150122073
1994	16.883585000340886
1995	16.785495121890538
1996	16.67713557215424
1997	16.340341341349244
1998	16.250943582118968
1999	16.332919312620138
2000	16.145000802077718
2001	16.544629397742742
2002	17.052022861255438
2003	17.447132287823045
2004	17.40592036332073
2005	17.334463250313984
2006	17.249442701605048
2007	17.290176446728555
2008	17.885369047193862
2009	19.122286800419214
2010	18.823533411558323
2011	18.52828703128537
2012	18.257549173720385
2013	18.03350031943676
2014	17.794828859980974
2015	17.36074617570845
2016	17.342503293872895
2017	17.111798335717815
2018	17.146880129500897
2019	17.281724334614342
2020	18.625613979502134
2021	18.14944231744445
2022	17.44726624018614