Year	% of GDP
1975	12.992964694606535
1976	19.167738050677823
1977	15.294167324413955
1978	14.714118537894954
1979	14.920506217607505
1980	14.829068052081329
1981	14.024333954913871
1982	16.90226006242544
1983	14.30009325182433
1984	15.824124789990575
1985	15.964324751738413
1986	15.786945824879192
1987	16.656807016641377
1988	16.290528036147762
1989	17.41173833451638
1990	19.130718421267225
1991	20.433808601498143
1992	18.943144030068996
1993	17.674649136536754
1994	15.808860614197714
1995	16.337609010943478
1996	17.385968201685856
1997	18.823693122226814
1998	18.196148538473842
1999	18.55837511933193
2000	17.98051636690701
2001	19.289436617533013
2002	16.899994302041502
2003	16.848109555771956
2004	16.080422670427694
2005	15.6089667731681
2006	21.166238633500782
2007	18.234144969029025
2008	18.64307055905399
2009	20.195571777313397
2010	18.17565263425814
2011	18.331978621849572
2012	19.43825704585271
2013	20.05424369011702
2014	20.183333408597473
2015	21.316455529244177
2016	20.424947771791224
2017	20.06361406041911
2018	19.221001047963927
2019	20.326231965781403
2020	23.074113890595306
2021	30.702560293096763