Year	% of GDP
1960	27.67736352166561
1961	18.438732843341253
1962	16.204599403963996
1963	17.645116447911953
1964	19.51670297900462
1965	20.204295967610143
1966	20.786740312983298
1967	19.203446873312426
1968	18.665258728315845
1969	20.478892678270665
1970	22.923358241487232
1971	23.20195288566806
1972	23.853947866038368
1973	23.72582357010422
1974	23.330571457823126
1975	26.877382384439645
1976	27.95098535389327
1977	27.711813786128698
1978	27.298936287451138
1979	24.558086081542957
1980	25.005070363298543
1981	26.009887513602457
1982	25.85801321474643
1983	26.33697562849428
1984	25.63572782090609
1985	25.231062756652374
1986	25.49228893982709
1987	24.038290064624977
1988	24.56953571287088
1989	23.768000873589138
1990	21.21775105919387
1991	21.87547128112681
1992	23.135699006060474
1993	24.75419891625018
1994	25.108861186870907
1995	24.29569173191664
1996	24.403893309263157
1997	24.11650131995086
1998	23.763986699022965
1999	22.794983996381525
2000	23.17515355857518
2001	23.61591648865703
2002	24.666276636316063
2003	25.996509229931924
2004	27.112992728188974
2005	27.22909038023494
2006	27.62162413289645
2007	27.97014990201317
2008	29.39525136141605
2009	31.658104439219255
2010	31.677528286288574
2011	32.26445714434681
2012	33.120455733795914
2013	33.701310205597636
2014	33.860194824704266
2015	33.82957764341567
2016	33.193060898712574
2017	33.08722842048166
2018	34.387908111908466
2019	34.42362847521
2020	34.918308533794686
2021	34.97142190714569
2022	34.31544902395048