Year	% of GDP
1960	6.549572035528048
1961	7.186538305416866
1962	8.49404976383455
1963	9.327609219241056
1964	9.353355498967158
1965	8.653465515751751
1966	6.638891822278061
1967	5.370941489062774
1968	9.510346698505733
1969	10.29724505422559
1970	10.20859660997715
1971	8.816708985054449
1972	9.181790160640318
1973	10.936084591743052
1974	8.400699991926064
1975	10.23866191405591
1976	12.665848717499664
1977	12.97744924827623
1978	11.896606247948238
1979	11.924361832848668
1980	10.635052562867072
1981	13.216051897481767
1982	13.392556112862316
1983	13.063985405601327
1984	13.120462989478119
1985	14.398807802008262
1986	14.31291452273471
1987	15.637856346024915
1988	16.771312707774523
1989	18.422002155613022
1990	19.696270154110167
1991	19.987247775892723
1992	21.037875155019513
1993	20.647576271672694
1994	22.07870797455676
1995	22.715617718477663
1996	22.315898092612322
1997	22.273395290819785
1998	22.226299203468702
1999	21.69030606260689
2000	21.719820315002952
2001	21.536788603827734
2002	22.921954469217187
2003	24.51557091735997
2004	27.22084615375638
2005	27.776652193181413
2006	29.24017816997087
2007	29.899336265685406
2008	27.694513938884707
2009	28.45271419760344
2010	30.631007454558883
2011	29.18309435952705
2012	29.10639099380068
2013	28.650423455633767
2014	28.084814893243326
2015	27.229764915372357
2016	27.491945456224403
2017	27.67061912442467
2018	26.93045391358437
2019	25.680727802163066
2020	25.08955535519149
2021	26.031988739643474
2022	25.520845067609145
2023	26.728307595916657