Year	% of GDP
1960	23.885060451575118
1961	17.83431163539479
1962	16.791499809975537
1963	17.844294347680957
1964	19.057129301860872
1965	19.810049842899936
1966	20.13417319925119
1967	18.87296103235303
1968	18.58712099571329
1969	19.88448365226894
1970	21.60087728735886
1971	22.10658402909158
1972	22.801772414707255
1973	22.49528547908067
1974	22.43892571782044
1975	26.298236162594712
1976	27.52982087445191
1977	27.728696386945646
1978	27.606047996161003
1979	25.12366801371212
1980	24.973559997695975
1981	26.011242481417014
1982	25.822935947745883
1983	25.87209007312597
1984	25.203902249998546
1985	25.0542894018006
1986	25.383147721663978
1987	24.3788624946893
1988	24.88650847087768
1989	25.151509432551745
1990	22.89100727821913
1991	22.09390024299756
1992	23.232244923763194
1993	23.91805398336264
1994	24.347104168988682
1995	23.66575399620338
1996	23.70689736619666
1997	23.756663110092642
1998	23.595920000669825
1999	22.876940134625155
2000	22.983129395133055
2001	23.652389382660914
2002	24.126991654700618
2003	25.07385923113129
2004	26.053509055960113
2005	26.29364891229865
2006	26.714409779430383
2007	27.69618104482664
2008	28.682464595389057
2009	30.291020527917457
2010	30.04123120835805
2011	30.490525056458324
2012	31.0734571513185
2013	31.395789296184073
2014	31.457877739053515
2015	31.75103892121543
2016	31.26133428248577
2017	31.143408326768707
2018	32.21433954916962
2019	32.16178805254618
2020	32.3539441577216
2021	32.51435922560968
2022	32.11308534102914