Year	% of GDP
1970	27.58607807065064
1971	26.8804949990662
1972	26.352262337179038
1973	26.965933306135575
1974	25.810994597320114
1975	26.545208048804824
1976	24.256391162282764
1977	20.954939802464693
1978	20.439506238737025
1979	21.075960143370665
1980	21.790605572321407
1981	20.133705199476296
1982	18.953163118469146
1983	20.93849312990144
1984	23.29435234522801
1985	23.127250509406757
1986	23.583886228192206
1987	23.765912246472524
1988	24.45788319756032
1989	25.145652375694084
1990	24.028053116331307
1991	20.907943582918925
1992	17.972757067463252
1993	16.054235164260188
1994	19.65033684066995
1995	22.586775458560126
1996	22.573651304072644
1997	23.10467124128343
1998	24.22874200236317
1999	25.661040703447775
2000	26.814579513340842
2001	27.219578517534472
2002	26.43512333509114
2003	27.787784714915624
2004	27.79320389905858
2005	28.382061496829618
2006	31.135863607228952
2007	32.5550394038374
2008	32.03960262932519
2009	27.33616411941544
2010	29.140820796584503
2011	29.032994302704125
2012	27.69396597719264
2013	27.33682756799867
2014	27.564801693041254
2015	27.498334199279277
2016	27.099309264965715
2017	28.537003833235204
2018	28.611484918546243
2019	30.39919645065182
2020	31.096870403976595
2021	32.9861504970753
2022	34.060635942710874
2023	33.50165471925014