Year	% of GDP
1960	73.93148621209143
1961	69.90707566499621
1962	70.56161512282063
1963	67.80822577630835
1964	67.00556023875819
1965	64.90329575854443
1966	64.18171698569685
1967	64.59405314988109
1968	64.2723836495969
1969	61.19864470422577
1970	60.98098430521972
1971	59.54540003146236
1972	56.93564614633983
1973	53.68537425824962
1974	57.7512814248862
1975	58.21103198803406
1976	56.7792275924187
1977	59.51385076295481
1978	59.58165490720672
1979	58.95175425265696
1980	60.42156072158642
1981	61.712425316117816
1982	61.41556857901532
1983	62.729579615329
1984	60.389628621272465
1985	59.51623872117907
1986	60.05584796373276
1987	64.19295248141626
1988	64.37982497558082
1989	65.35253689139866
1990	66.5852777060931
1991	66.39625299036123
1992	67.94454024467362
1993	68.34161501670577
1994	68.18277845962425
1995	67.99302769296452
1996	67.96062445473888
1997	66.70613588260044
1998	67.00209545464003
1999	66.73565952432106
2000	66.8932256081172
2001	66.15617052774502
2002	66.1462698167739
2003	64.76706678072428
2004	64.02001986167119
2005	66.15689191560877
2006	64.19483678736766
2007	64.83245315459479
2008	67.37415316368555
2009	68.132563203609
2010	67.25791518205344
2011	69.72737176812007
2012	70.21750260998164
2013	69.79434734689026
2014	69.07625458614565
2015	68.29686825162557
2016	67.99476734398287
2017	68.99480077171395
2018	69.23861612020418
2019	69.04868875764588
2020	70.20553451321956
2021	68.20772649321222
2022	68.47172840063406
2023	68.38591629829043