Year	% of GDP
1960	14.455906652903073
1961	15.755957242127502
1962	15.966388884966273
1963	16.34441521811325
1964	16.28628807589599
1965	17.120117598732804
1966	16.732153827085096
1967	16.06880339311913
1968	16.208586935043826
1969	16.123704673053755
1970	15.53615887821738
1971	16.585700453774102
1972	17.052433166509008
1973	15.90728514136655
1974	16.604427989812446
1975	17.714710839077146
1976	18.488947832874068
1977	18.79019263265101
1978	19.39253623465935
1979	20.354314021945463
1980	19.676240167604995
1981	19.86725387058587
1982	21.01451312656069
1983	20.56906775679318
1984	20.850428466172747
1985	21.803297767869232
1986	22.900914986467864
1987	24.443623261954286
1988	23.571978885970037
1989	24.576813564068065
1990	26.082170166157752
1991	24.584333789586022
1992	25.08949989176147
1993	23.667756294817565
1994	23.358888206313424
1995	25.13692250171931
1996	24.524787124235107
1997	25.35005214960809
1998	25.45876777771018
1999	27.535092424558723
2000	26.021784845146062
2001	29.93230963924568
2002	28.332524809293613
2003	28.334825706243315
2004	30.70814142389926
2005	32.7553370362813
2006	33.58489157693486
2007	35.812878121522424
2008	34.717959353566926
2009	33.95162692996741
2010	33.23001466656123
2011	34.31341664691382
2012	33.43693432560953
2013	31.295800847799924
2014	30.080237058867553
2015	28.733144128765375
2016	28.188437884636496
2017	28.17781361558993
2018	29.463068151265688
2019	28.454544334813548
2020	27.324321373866876
2021	29.578034515866168
2022	30.74986207924694
2023	31.32937124378113