Year	% of GDP
1965	16.77650989870107
1966	17.079429009048802
1967	17.16328221256945
1968	17.875434089973176
1969	18.467195215167113
1970	18.797723067815504
1971	19.98371162619034
1972	20.248564621075264
1973	19.05945153279654
1974	19.395979904233084
1975	21.888453754884626
1976	20.960510992897753
1977	19.622626950252897
1978	21.240914102056678
1979	18.34372643145289
1980	18.191539156647067
1981	21.174125649172883
1982	21.306157304884668
1983	21.059289126250363
1984	19.74903328206074
1985	19.506300315235173
1986	20.381472977723025
1987	20.288736886193647
1988	20.928331959586288
1989	18.690058981386155
1990	13.443886463739684
1991	16.12278583678994
1992	16.624151053850944
1993	15.848487515650156
1994	15.598540187016601
1995	14.704817207267434
1996	13.872881392860931
1997	14.228176037916718
1998	15.050653875649402
1999	13.860339255459223
2000	13.770708051903624
2001	14.342231763842605
2002	14.406334647650779
2003	13.63806479621229
2004	14.201055377683275
2005	13.700297326785627
2006	13.15584670243748
2007	12.582571508866385
2008	12.531788505116225
2009	14.142654084855177
2010	13.705601464709341
2011	15.95497293110787
2012	15.354302548817525
2013	15.69073021599994
2014	16.155806696072002
2015	16.995808305693238
2016	16.81167971469313
2017	16.45660722917471
2018	15.820681288861383
2019	16.226699417302026
2020	16.244949195460702
2021	14.152658959975387
2022	12.910166537628164
2023	13.664641883409425