Year	% of GDP
1960	16.678202243983435
1961	17.893221720513665
1962	17.481254519780755
1963	18.36706911259811
1964	19.233126385925694
1965	19.628875799166757
1966	17.485856102224183
1967	17.53930047074171
1968	17.29709602183364
1969	17.010964254414496
1970	17.37884111407967
1971	17.825499532592772
1972	18.040836357516845
1973	17.63344801554347
1974	20.373543846345
1975	17.525415623010463
1976	18.81284319482332
1977	20.435861250285335
1978	21.621853713277773
1979	22.409912356735568
1980	19.646506129575034
1981	24.62815882608802
1982	24.45508387471853
1983	21.13094170721359
1984	22.763562991411227
1985	25.265335903525244
1986	25.090549469534917
1987	24.928424368006368
1988	25.136233198913
1989	25.61049413831174
1990	26.04315777196308
1991	24.058932236316352
1992	26.099477673610426
1993	22.59641254591297
1994	25.39248543951585
1995	27.47844824897177
1996	22.699181657629193
1997	24.963299273329653
1998	24.43675731735544
1999	29.057995747895443
2000	24.673901132542515
2001	27.773222663071273
2002	27.98374240714377
2003	28.56582991664004
2004	32.04496052885562
2005	34.21279313621908
2006	35.88084071729927
2007	38.57776052447423
2008	35.390453507151484
2009	36.340524702972445
2010	36.96174035225182
2011	36.405824712546
2012	35.24439776115032
2013	31.564668125383356
2014	31.8890131782747
2015	30.175183154856967
2016	28.919351593354627
2017	29.90029280378318
2018	31.058012493922288
2019	29.296389546473378
2020	28.13917485669286
2021	30.73535494148137
2022	31.484146787274163
2023	31.892921719043386