Year	% of GDP
1965	8.167330677290837
1966	8.561020036429873
1967	12.54681647940075
1968	14.736842105263156
1969	12.350597609561753
1970	11.36079900124844
1971	13.62704918032787
1972	15.070921985815602
1973	21.298701298701296
1974	20.824053452115812
1975	18.29268292682927
1976	19.40928270042194
1977	20.423600605143726
1978	20.931802835921676
1979	21.043528394349956
1980	18.001847859562673
1981	17.78798163306049
1982	17.26914510878876
1983	14.49814126394052
1984	15.257025359835504
1985	13.271028037383179
1986	18.53259280912014
1987	25.12402253426385
1988	29.377741053835887
1989	30.56679994710581
1990	31.421553274359066
1991	31.543750234341605
1992	30.06970259677727
1993	31.453826499280613
1994	30.755052675324873
1995	32.773705324722634
1996	31.875501442405408
1997	33.024239063331244
1998	32.910663485362946
1999	32.13243380424668
2000	33.8642050752755
2001	34.265387589176676
2002	33.6990195266021
2003	33.01489469547458
2004	33.93914698165047
2005	34.23648692557776
2006	34.490224242147555
2007	35.21546165352615
2008	34.59717480639545
2009	34.7917540345526
2010	32.52848802169773
2011	31.689180247648913
2012	31.01901265034852
2013	29.642266347716813
2014	30.64160891900326
2015	31.71397586496122
2016	31.23146028205696
2017	29.810418447169724
2018	29.032117992579398
2019	29.559743045921454
2020	26.524528680105664
2021	27.25365956782248
2022	27.930287591402493
2023	27.64410525166488