Year	% of GDP
1970	29.87354798461438
1971	28.683898011231246
1972	28.114449970288685
1973	28.677788882490223
1974	28.742398741259382
1975	25.59689329511986
1976	26.605377470274433
1977	25.6880075999956
1978	24.933739440303274
1979	25.85506451404636
1980	26.471502428149265
1981	24.04468264798632
1982	23.465461537259532
1983	22.715428717217822
1984	22.76947989828253
1985	22.68330407985139
1986	22.61428463716095
1987	22.713232198995247
1988	23.77662860463319
1989	24.635534558069626
1990	24.857171018585557
1991	24.317964260467626
1992	23.363184397953606
1993	21.468969417504592
1994	21.86156171795877
1995	22.286243288802634
1996	21.72918930500223
1997	21.958647623870572
1998	22.710087664164135
1999	22.987470263895048
2000	23.648281426053057
2001	23.01206616542885
2002	22.072383830974534
2003	22.04169228321593
2004	22.289018301999402
2005	22.520490728736846
2006	23.55242332093071
2007	24.438701421791485
2008	24.011736693200213
2009	20.624165065565762
2010	21.169705289166878
2011	21.72800486524413
2012	20.290476813162964
2013	19.88397292303361
2014	20.307879144880875
2015	20.763256693481576
2016	20.96106077901288
2017	21.57744236925489
2018	22.186239835686234
2019	22.904007129397563
2020	22.44489337885335
2021	23.46632150661721
2022	24.700032983404565
2023	22.919462574311865