Year	% of GDP
1965	31.450087803347238
1966	29.99390753903735
1967	30.559838050341074
1968	29.10356128343463
1969	28.650335561938554
1970	27.45922089744761
1971	26.00445216656975
1972	24.736589633723877
1973	24.29168198515311
1974	21.168294093177103
1975	20.882315908111735
1976	18.148267476660912
1977	18.217672710890994
1978	18.654687508169058
1979	17.170189917925356
1980	15.094059713247592
1981	14.667879466559913
1982	14.895467062603075
1983	15.342627248517108
1984	15.269311027179496
1985	15.718851378981327
1986	16.438911632788724
1987	16.157077745415425
1988	16.498755254657993
1989	16.334015262970198
1990	15.217897179870635
1991	13.936327376102184
1992	13.150594383169464
1993	12.209758597125866
1994	12.231227032255745
1995	12.56452004928249
1996	12.594629322811027
1997	11.837270154925799
1998	11.546395268480454
1999	10.960113359383955
2000	10.124276656747117
2001	9.890693567576188
2002	10.197732959116967
2003	10.321114635370531
2004	9.657158140292232
2005	9.257118021345304
2006	8.95464106757171
2007	9.212121358588387
2008	9.085838062706717
2009	9.950640342103743
2010	10.017455737910154
2011	9.779669143939
2012	9.573456704096118
2013	9.660679362552834
2014	9.777487692672537
2015	10.48420307408673
2016	10.78028312501728
2017	10.67612085489785
2018	10.330712159667865
2019	10.66297323758962
2020	11.795604377075097
2021	11.261916422218004
2022	10.77237349431384
2023	10.636626154935795