Year	% of GDP
1960	11.72691872277001
1961	11.26578877648014
1962	12.329079087974256
1963	11.91885080927416
1964	11.461610052835036
1965	11.26668421793949
1966	9.744124379349822
1967	8.47912433114556
1968	9.757603523754161
1969	10.463004554570226
1970	10.193594760944197
1971	10.46187783128561
1972	11.252365584313731
1973	15.10769510730067
1974	17.581623573417424
1975	17.504610907081613
1976	17.657553966781283
1977	19.85416454273227
1978	26.252064344300578
1979	26.538137140368406
1980	28.15109468102363
1981	29.001883226130253
1982	26.820351815919192
1983	26.9581442602932
1984	24.43825882432582
1985	22.996012315852056
1986	20.868158368590205
1987	20.590845689257215
1988	22.566075424967693
1989	21.73925469818229
1990	20.388012079379838
1991	19.351555765767337
1992	20.298772894794727
1993	20.337644371474447
1994	12.51745918751853
1995	11.262303046264773
1996	12.24940411968589
1997	12.146101486257848
1998	11.388185956066433
1999	11.90354906059327
2000	14.507267488550236
2001	11.237106650157015
2002	11.895378157859675
2003	13.037155101590692
2004	14.31245641863673
2005	15.584006284572252
2006	15.72348303437893
2007	16.14844846404295
2008	18.816623223837702
2009	19.369390278373583
2010	21.27167937403635
2011	23.81921619305109
2012	24.376179639401855
2013	26.257967997040094
2014	27.26529583072405
2015	27.253668920189178
2016	27.753347698305635
2017	29.62275842751257
2018	29.512986279691184
2019	29.482356412421545
2020	29.274460282362874
2021	29.874146188100624
2022	32.349590937221784
2023	31.102714172003555