Year	% of GDP
1960	6.084114249988978
1961	6.005603457426954
1962	6.34098505326509
1963	6.70605166211505
1964	6.474659944787987
1965	6.446399134310266
1966	6.5686685489044
1967	6.679270034397061
1968	6.989939317976257
1969	6.415500627127442
1970	6.719227025878388
1971	6.507248934913301
1972	6.987206171093935
1973	8.650271621208706
1974	11.989024287599344
1975	11.47442745012355
1976	11.703247931132243
1977	12.0355989557008
1978	15.926092720283307
1979	17.4733079085238
1980	20.27833292345888
1981	21.444793361555746
1982	19.693785185850583
1983	19.761970995973
1984	18.36641779042637
1985	18.45428192305122
1986	17.10230471353079
1987	19.168212605845675
1988	22.18932888791646
1989	22.470741713812824
1990	23.094063031408982
1991	24.87097707743917
1992	26.085002971377016
1993	29.105575344274744
1994	28.89231581112412
1995	29.498251770252697
1996	28.20911703292624
1997	27.544430780624634
1998	24.907270750158798
1999	25.189310596977833
2000	29.081898109864348
2001	27.79023637749951
2002	28.56182138521863
2003	31.464332663284928
2004	35.29035852397307
2005	35.46815426416765
2006	34.49340354496153
2007	32.49991596411709
2008	31.020792569958505
2009	24.925056633756675
2010	27.693902148695898
2011	28.378630570777897
2012	27.096694382620452
2013	26.278565229102995
2014	25.300909770621725
2015	21.971906975882565
2016	21.09494731546197
2017	21.96227474102618
2018	22.6614081865668
2019	21.431489373647608
2020	19.5620260733524
2021	21.229666689511536
2022	22.13980028220883
2023	21.793418405690776