Year	% of GDP
1970	16.700592304656915
1971	17.01506730238425
1972	16.9079744215632
1973	16.49646529289481
1974	16.983013965117962
1975	18.078372954531357
1976	17.668271783677543
1977	17.527233653501277
1978	17.35295612488882
1979	17.233789629515517
1980	17.60874752638085
1981	17.707346094150907
1982	18.161267123041142
1983	18.016581294698124
1984	17.449009699908867
1985	17.450798754121777
1986	17.503008706152787
1987	17.499203599736163
1988	17.07634825813134
1989	16.98227985481311
1990	17.330025312316977
1991	17.491238666138486
1992	17.579003734881642
1993	17.45801064796183
1994	17.12794735310869
1995	16.977647431245554
1996	16.8832250919991
1997	16.596744442327232
1998	16.522357609347782
1999	16.52066258511775
2000	16.358687145727504
2001	16.787683500311612
2002	17.28698249679167
2003	17.62989587801034
2004	17.552115458396848
2005	17.47205464601016
2006	17.382757294848634
2007	17.382136707026486
2008	17.92672722147735
2009	19.229622850878396
2010	18.859198734868016
2011	18.51091050766958
2012	18.266140263135
2013	18.139652716152792
2014	17.93690934511488
2015	17.567313241893938
2016	17.49547693123075
2017	17.258840279864717
2018	17.26181134762051
2019	17.42047109793839
2020	18.85206840390479
2021	18.257086573316858
2022	17.542676928314016