Year	% of GDP
1965	18.964092051315966
1966	18.748720747765574
1967	20.13159140395721
1968	19.92337953904142
1969	20.010203350995273
1970	20.662358399614362
1971	20.37514593998178
1972	21.370257470439945
1973	22.72372100674453
1974	23.183842870613926
1975	23.22491779969786
1976	24.1753245533282
1977	23.84065449863064
1978	23.23892480046444
1979	22.467629584704795
1980	23.269775129343373
1981	21.31434107686558
1982	21.21981437537691
1983	20.98118060846648
1984	22.11065544015118
1985	21.38683090197655
1986	22.476780933759734
1987	20.317578244342283
1988	21.157935132433202
1989	20.886672178327117
1990	18.033307542147117
1991	17.90812715672095
1992	16.842210789264698
1993	15.832146074945964
1994	14.996975842664567
1995	14.761504648278558
1996	14.409203511233471
1997	13.788803370467692
1998	14.051315643005651
1999	13.84937571835926
2000	13.932700653619845
2001	14.137196647347144
2002	14.032928017348556
2003	14.237456167728432
2004	14.41341036255288
2005	15.991040306783654
2006	15.978606094275705
2007	16.15426621797596
2008	15.37370371458432
2009	14.780072332297875
2010	13.967025695695318
2011	13.217602576964005
2012	13.089284883729647
2013	12.662356303730746
2014	12.269318642081629
2015	12.400893758108694
2016	12.297778837716013
2017	11.409593566771807
2018	11.151852972946717
2019	10.926657535176988
2020	10.727502351094834
2021	11.200418569317996
2022	11.246633024695347
2023	10.891677951245118