Year	% of GDP
1970	29.66990400066834
1971	28.581636401389222
1972	28.00240786604238
1973	28.63400525155472
1974	28.567672701147856
1975	25.251912081220922
1976	26.32628345444388
1977	25.57746848418305
1978	24.96802840298887
1979	25.81187457790106
1980	26.47668804405199
1981	24.12429327679994
1982	23.512776904303813
1983	22.718800508525774
1984	22.664057984930892
1985	22.426839486904083
1986	22.353779524282583
1987	22.44673275202724
1988	23.553656732037528
1989	24.33863655114866
1990	24.58795939774169
1991	24.337042493223723
1992	23.41711309022882
1993	21.576391210964047
1994	21.934987231542642
1995	22.332432973026958
1996	21.69495188233776
1997	21.869820076874525
1998	22.610579426926368
1999	22.98032190513216
2000	23.60736532806364
2001	23.001089245033427
2002	22.061489025470742
2003	22.03370309491706
2004	22.211716389448252
2005	22.466792742979475
2006	23.4111788797287
2007	24.130410864712875
2008	23.647637212925424
2009	20.427819985366185
2010	20.999847085624427
2011	21.513405594794882
2012	19.99103647775426
2013	19.613275189110364
2014	19.949281540934756
2015	20.38151364069002
2016	20.684974689194213
2017	21.32284460592664
2018	21.892209939946422
2019	22.778578116980572
2020	22.345578073234297
2021	23.168302753353178
2022	24.38332321659385
2023	22.855459266982713