Year	% of GDP
1960	18.859928985639435
1961	25.91744090486458
1962	26.629398691961597
1963	27.123538026332213
1964	26.142595444003376
1965	26.703584690973788
1966	26.46315793106139
1967	27.37468679805654
1968	28.001700691940425
1969	25.55382082207235
1970	24.115019731882782
1971	22.88231104319249
1972	22.3182299591414
1973	22.15293347653486
1974	20.981250927198722
1975	20.755848538998563
1976	20.02700667512152
1977	18.186381252551477
1978	16.565569565398373
1979	16.855020963618156
1980	15.23769698981125
1981	15.37748453882632
1982	16.46792482342933
1983	17.32825839027133
1984	17.336793821804438
1985	16.525662983750042
1986	15.664629488378127
1987	15.069859616740654
1988	14.672876750686179
1989	14.507464637065299
1990	14.546501909565656
1991	13.69464828896505
1992	11.373874453443984
1993	10.546474069412499
1994	11.07228007746573
1995	10.284336331546411
1996	10.237930875936325
1997	9.713601535796808
1998	9.758446949062296
1999	9.802772489398496
2000	8.903168336285948
2001	8.880697485980205
2002	8.729245736517782
2003	8.40654771236375
2004	8.411020991736756
2005	7.387699982678423
2006	6.861978765053485
2007	6.731126110166804
2008	6.82426196651666
2009	7.007706247784001
2010	6.687729573686359
2011	6.726531935332207
2012	6.676700110160929
2013	6.756043812989324
2014	6.7098697003071415
2015	6.887193243153959
2016	6.773635444591421
2017	6.331966414998264
2018	6.0384615244092545
2019	6.104287678742672
2020	6.787972541154209
2021	6.543156619676553
2022	6.434483489740749
2023	6.273332972981025