Year	% of GDP
1972	18.985219142657808
1973	19.53737768153347
1974	20.355679692304033
1975	22.299916010481507
1976	22.667348582104648
1977	22.702250580547744
1978	23.034692485283276
1979	23.176678347328203
1980	24.36938499660262
1981	24.504947176573634
1982	25.50260770982687
1983	25.678449258278718
1984	25.076644331890684
1985	25.469933188030094
1986	26.308714789778897
1987	25.870681277597622
1988	25.052255340858185
1989	24.713150447952334
1990	24.976970663897173
1991	27.980995539442613
1992	28.237516414571193
1993	28.520785406199913
1994	26.503226932908785
1995	27.65112832927837
1996	26.53906776473084
1997	25.72961165322327
1998	25.713640428975935
1999	25.107888242864274
2000	24.690387398579745
2001	25.38723146202534
2002	25.792328770231496
2003	26.199357905077136
2004	25.79489501148334
2005	25.95903237655284
2006	25.672795491821137
2007	25.47987003887788
2008	26.772204312261913
2009	29.52283809654277
2010	29.581176160763853
2011	28.96176848733379
2012	28.956140970496264
2013	28.2871345427754
2014	27.94631406346222
2015	27.621090505460483
2016	27.419843685160124
2017	27.121235592157902
2018	27.040640033105646
2019	27.257499745884918
2020	34.899538575595265
2021	33.485142314783516
2022	30.09556712377156