Year	% of GDP
1970	10.827535680067838
1971	10.571125517843095
1972	10.019560637707983
1973	9.478755648336962
1974	8.271748450720548
1975	8.282838270588055
1976	8.760468079746348
1977	9.440934046520532
1978	8.723676619679484
1979	8.05624896681153
1980	7.403760363048252
1981	7.252131985133717
1982	6.760746823108777
1983	7.234276820893312
1984	6.757089492262258
1985	6.864776062421361
1986	7.337061854200563
1987	7.419783743646602
1988	7.960473359059728
1989	8.503860237658051
1990	8.074135288539715
1991	7.656276248995448
1992	6.919693262818346
1993	6.590059460167617
1994	6.460789926650214
1995	6.485933604494518
1996	6.435148028052091
1997	6.315491536749213
1998	6.427343735637753
1999	6.0211015233467275
2000	6.293273429255172
2001	6.732166036552161
2002	6.682700145442117
2003	6.86791069933702
2004	6.438375572639973
2005	6.0155796056671145
2006	5.7504590964723015
2007	4.8469232053618825
2008	4.495170168626045
2009	3.7932434361436784
2010	3.6123967756347595
2011	3.229235878521376
2012	3.0475121012522974
2013	2.944524001149125
2014	2.849880011377886
2015	2.786004533034582
2016	2.600517720441323
2017	2.3847051655314
2018	2.370477738210935
2019	2.357299521418739
2020	2.945244978150716
2021	2.655073440208895
2022	2.61944750889428
2023	2.4356503544597183