Year	% of GDP
1960	8.518606976586064
1961	9.692260774804698
1962	9.100510473508166
1963	10.189779211113846
1964	12.116147088548527
1965	13.021541544407048
1966	13.382848965963658
1967	16.655121864780785
1968	15.502115785600346
1969	16.915954517569467
1970	18.030191802031425
1971	18.20268462787805
1972	19.44385390974101
1973	19.373948675430693
1974	17.486470191568877
1975	19.474582412215884
1976	21.371099972438696
1977	22.817625904738698
1978	24.33596244830123
1979	22.644815267331555
1980	23.41955432957621
1981	22.12348434927021
1982	22.48005535656132
1983	23.35226702948598
1984	20.591283816780205
1985	18.86778968543072
1986	18.042962346768448
1987	17.693205156037404
1988	16.688578709146547
1989	18.859303121174953
1990	20.406202775354647
1991	23.599530433216483
1992	27.893667205708205
1993	30.30271615286337
1994	31.752018968731083
1995	26.901349922869656
1996	26.1012513243009
1997	25.475453054545927
1998	23.56655239226315
1999	24.361732775859515
2000	22.367229789893965
2001	27.63003350014245
2002	23.772960304324
2003	21.952769267748565
2004	21.71236611672545
2005	20.904851563615647
2006	20.285671616540995
2007	22.196815361700867
2008	24.995535743286553
2009	29.37166773807961
2010	29.945198673668976
2011	31.719499777303227
2012	34.06732660014647
2013	36.463306541138735
2014	38.715483586222675
2016	41.42202057117203
2017	41.93558399681815
2018	43.06412343239035
2019	46.0634404518155
2020	54.177813310120136
2021	52.01844278282487
2022	50.037454633095166
2023	50.892287416071824