Year	% of GDP
1960	21.951698685129585
1965	19.711385102448887
1966	20.55636232248783
1967	19.905662920631773
1968	18.616698606819092
1969	17.70393385277757
1970	18.607316954667482
1971	18.20952191133101
1972	17.955963520391364
1973	20.265609591047753
1974	25.01085289411971
1975	25.643461061025437
1976	26.411208520394645
1977	26.950813170266958
1978	27.014311368025194
1979	30.30019093333293
1980	31.948130745906038
1981	31.87754166476948
1982	29.78533796086577
1983	28.776422562407692
1984	28.676223393010144
1985	27.32771532177216
1986	25.23385547401658
1987	25.350730236891945
1988	27.88519937299965
1989	32.01960944153489
1990	34.122667456945834
1991	34.40982601717313
1992	35.541418266353354
1993	36.91087153923855
1994	38.108573647735994
1995	40.69315825782978
1996	40.814595347647845
1997	42.445633661553565
1998	42.23351039616244
1999	42.26941604218875
2000	44.973803483986146
2001	44.982554472477
2002	48.170533279577754
2003	49.833966302429005
2004	55.46201139631606
2005	58.166057773446965
2006	59.71133318105155
2007	61.24415980203958
2008	66.01286116324881
2009	57.60440233134508
2010	57.90169020347962
2011	62.03837432043721
2012	60.98591463871467
2013	59.05581759060783
2014	55.99244061472037
2015	51.37133047745083
2016	48.97447430236582
2017	51.72666093536899
2018	55.068917253259706
2019	52.39648885345378
2020	47.922045513688786
2021	54.51428162022045
2022	60.14141552579734
2023	51.16485641975729