Year	% of GDP
1966	25.644227914863453
1967	25.15386214880512
1968	25.045346215770824
1969	27.037820466838813
1970	26.746177117580338
1971	25.912181211136737
1972	26.707258818645258
1973	27.537057302074935
1974	26.935606745666078
1975	22.471363774304074
1976	25.41416063243523
1977	24.406195698684243
1978	23.135276665683403
1979	23.118011077129815
1980	20.124353315534158
1981	17.013653192671306
1982	18.27134084024806
1983	18.364264458898084
1984	20.602711849295314
1985	22.099751652992797
1986	23.784568756431252
1987	22.021821021206645
1988	21.05724152110724
1989	21.323235764391544
1990	20.798383413200217
1991	19.61162028006306
1992	18.939569554739517
1993	17.37785843573145
1994	18.73446113572731
1995	20.68642172310642
1996	20.063697933076345
1997	22.061946164734508
1998	22.655148292879478
1999	20.887745100243578
2000	22.35154176491336
2001	21.82516652408609
2002	21.343037915221952
2003	20.921735623489006
2004	21.691315996234948
2005	22.20644844141162
2006	24.298292041808963
2007	25.27783558497777
2008	23.984099269263844
2009	19.08836673188088
2010	18.076046184296004
2011	19.126961092828097
2012	19.466390935490676
2013	19.690805627321364
2014	20.09102057669058
2015	20.631205909233696
2016	21.77539569683944
2017	22.053062461647215
2018	22.599289834526907
2019	21.853088227922896
2020	22.50482962753533
2021	23.984697442479682
2022	23.88054248302333
2023	21.99969949467544