Year	% of GDP
1961	22.626883686530938
1962	23.192419137890766
1963	23.023889140181712
1964	23.99098809699183
1965	26.417755431606416
1966	27.100271672214472
1967	24.404425220728353
1968	23.476502857286512
1969	24.183250320731673
1970	22.12429473927287
1971	23.096440598999042
1972	23.126330108984266
1973	24.327366306483842
1974	25.851240658164503
1975	24.83544999608471
1976	25.11672345342984
1977	24.287909420322347
1978	23.494730272108356
1979	25.141579508426815
1980	23.76265895332413
1981	25.2960435228772
1982	19.923953001306092
1983	20.2214015133534
1984	20.960375422631856
1985	21.533637183592084
1986	21.680306856806485
1987	22.177784432805883
1988	23.506047274339842
1989	23.610029497646593
1990	21.30421092133584
1991	19.341296972097815
1992	18.37741983976304
1993	18.474988521318224
1994	19.51609400332335
1995	19.380342728237984
1996	18.927723258210307
1997	21.218002084033984
1998	21.045272976452864
1999	20.684242849361603
2000	20.614467711152077
2001	19.67139493331353
2002	19.7393454062916
2003	20.466677611811832
2004	21.382860531067795
2005	22.63204211109806
2006	23.595893019656895
2007	23.90787622174613
2008	24.072502776034373
2009	21.959494289565427
2010	23.48200469854974
2011	24.15145347149453
2012	24.867543598008982
2013	24.907675073031974
2014	24.87070761046811
2015	23.82159339483391
2016	22.761120159483948
2017	23.55046922860956
2018	23.377311161923572
2019	23.042424174314682
2020	22.674717611953206
2021	24.31442563593436
2022	25.36390680090101
2023	23.902738739736648